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CANADIAN ELECTRICAL CODE BOOK
2021 Changes
Section 0
Revised definitions:
Ampacity — the maximum current, in amperes, that a conductor can carry continuously under the conditions of use without exceeding its temperature rating or, for insulated conductors, the insulation temperature rating. This revised definition clarifies the limitations of ampacity and is the first step for future proposals to get better consistency on the use of the word “ampacity”.
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The definition of “cable tray” has replaced the word “raceway” with the wording “supporting means.” At the same time, “cable tray” was removed from the definition for “raceway.” The Table 19 Task Force submitted these changes as part of a rewrite of Table 19
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The definition of “cablebus” added the words “cable or both” to recognise that cablebus can be manufactured with insulated conductors and cables. This change also aligns with the ANSI/CAN CSA Standard C22.2, No. 273 – Cablebus.
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The definition for Explosion-proof enclosure was revised to harmonizes with the new edition of CSA Standard C22.2, No. 30 – Explosion-Proof Enclosures for Use in Class I Hazardous Locations to read: Explosion-proof enclosure — an enclosure constructed so that it will:
a) withstand the pressure developed during an internal explosion of an explosive gas atmosphere;
b) prevent the transmission of an internal explosion to an explosive gas atmosphere surrounding the enclosure; and
c) not have external surface temperatures that are capable of igniting an explosive gas atmosphere surrounding the enclosure.
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Voltage –
Extra-low voltage —
a) for ac circuits, any voltage not exceeding 30 V ac; or
b) for dc circuits, any voltage not exceeding 42.4 V dc.
Low voltage —
a) for ac circuits, any voltage exceeding 30 V ac but not exceeding 1000 V ac; or
b) for dc circuits, any voltage exceeding 42.4 V dc but not exceeding 1060 V dc.
High voltage —
a) for ac circuits, any voltage exceeding 1000 V ac; or
b) for dc circuits, any voltage exceeding 1060 V dc.
New definitions:
Armour — a metallic covering wrapped over one or more insulated conductors that is intended primarily for physical protection against severe installation conditions but is not intended to provide a hermetic seal.
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Sheath — a continuous covering that is applied over one or more insulated conductors and is intended primarily to provide a hermetic seal and, to a lesser extent, physical protection.
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Flood elevation – elevation of surface water resulting from a flood event designated in accordance with the National Building Code of Canada or applicable local legislation (see Appendix B).
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Flood hazard zone – a spatially delineated area designated in accordance with the National Building Code of Canada or applicable local legislation as being subjected to a flood hazard (see Appendix B).
Section 2
Rule Changes:
Rule 2-032 Damage and interference has a new Subrule 3) proposed by Task Group on Flood and Drought requiring equipment that has been exposed to water to be evaluated prior to being energized, ensuring that the equipment has not been damaged. The new Appendix B note for this subrule helps explain the intent and provides details on where to get more information, like NEMA publication GD 1, Evaluating Water-Damaged Electrical Equipment.
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2018 CE Code Rule 2-134 Sunlight resistance requirements has been renumbered to Rule 2-136 and now has a new Subrule 2) that reads:
2) Where the outer covering of a cable assembly marked sunlight resistant has been removed for termination of the cable, and the inner jacket or insulation of the internal conductors is exposed to direct rays of the sun, the internal insulated conductors shall be
a) marked as sunlight resistant; or
b) protected by tubing, tape, or equivalent that is marked as sunlight resistant.
An addition to the Appendix B note also provides the CSA Standards used to certify sunlight resistant tubing and tape.
New Rules:
Newly inserted Rule 2-134 Seismic restraint requirements for electrical equipment requires electrical equipment be provided with seismic restraint in compliance with the National Building Code of Canada, where it is mandated by local legislation.
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Newly inserted Rule 2-318 Receptacles required for mobile industrial or commercial structures is a direct result of a fatality. The new rule reads:
Where a mobile industrial or commercial structure contains transfer equipment for connection of an alternate power supply, at least one receptacle of CSA configuration 5-15R or 5-20R shall be provided that is supplied by a circuit connected to or capable of being connected to the alternate power supply through the transfer equipment.
In addition, proposals have been submitted to change transfer panel requirements to make it much harder to defeat the mechanical interlocking.
Section 4
Rule Changes:
Rule 4-004 Ampacity of wires and cables has seen two changes. First Subrule 7) has a new Item a) ii), that reads:
The correction factors specified in this Rule
a) shall not apply to conductors installed
i) in auxiliary gutters containing 30 conductors or less; or
ii) inside electrical equipment for termination of these conductors at the electrical equipment;
This is a significant change when applying Rule 4-006. For example, where the insulated conductor is at least 1.2 m long terminating within a distribution panel, the Rule 4-004 correction factors will not apply for conductor ampacity in conjunction with the application of Rule 4-006.
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The second change for Rule 4-004 resulted in the deletion of Subrule 22 and Table 39 Minimum permitted size for 3-wire 120/240 V and 120/208 V service conductors for single dwellings and feeder conductors or cables supplying single dwelling units of row housing, apartment, or similar buildings and terminating on equipment having a conductor termination temperature of not less than 75°C, as this table with the very long name, which was introduced in the 2018 CE Code. The proposal submitted to delete this table and subrule identified code inconsistency and confusion among Code users.
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Rule 4-024 Identification of insulated neutral conductors up to and including No. 2 AWG copper or aluminum. Rule 4-032 Identification of insulated conductors. In both of these rules, the allowance to use grey insulated conductors as an identified (neutral) conductor has been deleted. This proposal’s rationale included some history of why grey insulation was originally allowed, indicating that in the 1930s, manufacturing of white conductor insulation was difficult as most “white” insulation was grey. For many years now, the ability to manufacture white insulation is much easier, and the need for grey conductor insulation as a substitute for white is no longer needed.
Section 6
Rule Changes:
Rule 6-206 Consumer’s service equipment location. Subrule 1) has a new Item 1) vi) that requires service boxes and consumer’s service equipment located above the flood elevation. This means the electrical contractor will need to confirm the building is not in a flood hazard zone before installing the consumer’s service equipment in a basement.
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Rule 6-212 Wiring space in enclosures, has a new Subrule 3). An Appendix B note recognizing conductors used for the connection to components like a shunt trip coil or a trip alarm (and that are integral to the function of a circuit breaker or externally operated switch) are permitted to be installed in the service box. This change is a good example of a proposal created by the Subcommittee chair as a result of an interpretation question that identified confusion in the code.
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Rules 6-300 and 6-310. The title of Rule 6-310 was changed to 6-310 Use of joints and splices in consumer’s service conductors. This rule has added a reference to splices and removed the old reference to neutral conductors making the rule applicable to all consumer’s service conductors. This rule was also split into Items a) and b), including the addition of the allowance for termination of oversized conductors due to voltage drop. The same proposal also deleted Item b) ii) of Subrule 1) and Subrule 2) in Rule 6-300 Installation of underground consumer’s service conductors, dealing with joints and splices in underground consumer’s service conductors as a duplication of revised wording in Rule 6-310.
Section 8
Rule Changes:
Rule 8-108 Number of spaces for branch circuit overcurrent devices has been completely revised to read:
1) Panelboards installed in single dwellings shall, at the time of the original installation, have at least four additional spaces left for future overcurrent devices with provision for a two-pole device.
2) Panelboards installed in each dwelling unit in an apartment or similar building shall, at the time of the original installation, have at least two additional spaces left for future overcurrent devices with provision for a two-pole device.
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Rule 8-304 Maximum number of outlets per circuit is one of the more significant code changes that may change current wiring practices in Canada. Subrule 4) covering fixed multi-outlet assemblies has not changed, but the revised Subrules 1) to 3) now reads:
1) Except as permitted by other Rules of this Code, the maximum number of outlets on any 2-wire branch circuit shall not exceed the following:
a) 12 outlets for a 15 A branch circuit where the fused switch or circuit breaker is marked for continuous operation at 80%;
b) 15 outlets for a 15 A branch circuit where the fused switch or circuit breaker is marked for continuous operation at 100%;
c) 16 outlets for a 20 A branch circuit where the fused switch or circuit breaker is marked for continuous operation at 80%; and
d) 20 outlets for a 20 A branch circuit where the fused switch or circuit breaker is marked for continuous operation at 100%.
2) Except as permitted by Subrule 3), when a receptacle is used as an outlet for the application of Subrule 1), it shall be considered as
a) 1 outlet per duplex receptacle;
b) 5 outlets per triplex receptacle; and
c) 2 outlets per quadruplex receptacle.
3) Where the connected load is known, the number of outlets shall be permitted to exceed the maximum number permitted in Subrule 1), provided that the load current does not exceed the continuous operation marking on the overcurrent device protecting the circuit.
4) …
The rule now recognizes an increased number of outlets for 20 A branch circuits with branch circuit overcurrent devices marked for continuous operation at 100%. In addition, Subrule 2) has removed the 1 A per outlet consideration and now provides clear direction when triplex and quadruplex receptacles are installed.
Section 10
Rule Changes:
Rule 10-302 Use for impedance grounding systems. The rule was reduced from four to three subrules by moving the monitoring and alarm to an easier readable Table 17
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Newly inserted Rule 10-612 Installation of bonding conductors is a new rule bringing requirements from the 2015 CE Code that were missed during the original rewrite for Section 10 for the 2018 CE Code. This new rule reads:
1) The bonding conductor shall be permitted to be spliced or tapped.
2) Where more than one bonding conductor enters a box, all such conductors shall be in electrical contact with each other by one of the following means:
a) securing all bonding conductors under bonding screws; or
b) connecting all bonding conductors together with a solderless connector, and then connecting a minimum of one conductor, not smaller than the largest bonding conductor, to the box by a bonding screw or a bonding device.
3) Where a bonding conductor is run in the same raceway with other conductors of the circuit to which it is connected, it shall be insulated, except that an uninsulated bonding conductor shall be permitted to be used where the length of the raceway does not exceed 15 m and does not contain more than the equivalent of two quarter bends.
4) Where circuit conductors are installed in a raceway, a separate bonding conductor, when required, shall be installed in the same raceway as the circuit conductors.
5) Where a separate bonding conductor is run with single-conductor cables, it shall follow the same route as the cables.
6) A copper bonding conductor shall
a) if No. 6 AWG or larger and attached securely to the surface on which it is carried, be protected where exposed to mechanical damage; and
b) if smaller than No. 6 AWG, or if the installation does not come within the provisions of Item a), be installed and protected in the same manner as the circuit conductor for a given installation.
7) An aluminum bonding conductor shall
a) if No. 4 AWG or larger and attached securely to the surface on which it is carried, be protected where exposed to mechanical damage; or
b) if smaller than No. 4 AWG, or if the installation does not come within the provisions of Item a), be installed and protected in the same manner as the circuit conductor for a given installation.
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Rule 10-614 has been renumbered Rule 10-616 Size of system bonding jumper or bonding conductor. The change for this rule is in the addition of the words “the ampere rating or setting of” at the beginning of Item a) of Subrule 3) to read:
3) The size of a field-installed bonding conductor installed at other than service equipment shall not be less than that determined in accordance with Table 16 based on
a) the ampere rating or setting of the overcurrent device protecting the ungrounded conductors; or
b) the allowable ampacity of the largest ungrounded conductor for installations where the size of the circuit conductors is increased to compensate for voltage drop.
Item a) change clarifies that the ampere rating or setting of the overcurrent device is to be used to determine the size of the bonding conductor when applying Table 16.
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Deletion of Item f) in Rule 10-700. Item f) provided direction for the equipotential bonding of non-electrical equipment related to passenger ropeways, which was deleted as a duplication of recently added requirements in Section 58
Section 12
Rule Changes:
Rule 12-010 5) adding “in accordance with Rules 2-130 and 2-132” to the wiring methods mandated in a furnace cold-air return duct that is formed by boxing in between joists of a combustible building. This change in Subrule 5) highlights the existing building code requirement that the cable which runs inside an air plenum in a combustible building must be marked FT6.
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Rule 12-020 Wiring under raised floors for data processing and similar systems. Liquid-tight flexible conduit as a wiring option was removed as redundant wording as recent changes in Rule 12-1302 allow liquid-tight flexible conduit to be used as a general wiring method. The major change to Rule 12-020 is to allow portable power cable not exceeding 4.5 m in length to be used as a wiring method under raised data processing floors. In addition, cables passing through raised data processing floors must now terminate directly into the bottom of the data processing equipment.
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Rule 12-100 and 12-102 were reworded, removing duplication and aligning with a completely new Table 19.
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Subrule 2) of Rule 12-106 Multi- and single-conductor cables have revised the exception allowing different voltages within a cable to supply or control devices and equipment that are interconnected, or dependent upon each other, for proper operation and functionality. The intent is to clarify the past wording of “remote device.”
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The same change was made to Rule 12-904 for insulated conductors in raceways “Multi- and single-conductor cables have revised the exception allowing different voltages within a cable to supply or control devices and equipment that are interconnected, or dependent upon each other, for proper operation and functionality. The intent is to clarify the past wording of “remote device.” “
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Rule 12-3030 for boxes, cabinets, or fittings “Multi- and single-conductor cables have revised the exception allowing different voltages within a cable to supply or control devices and equipment that are interconnected, or dependent upon each other, for proper operation and functionality. The intent is to clarify the past wording of “remote device.” “
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Knob-and-Tube. Open wiring, also known as knob-and-tube, in Rules 12-200 to 12-224 have been deleted.
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Rule 12-204 that required insulated conductors to be installed on a raceway has been modified and renumbered as Rule 12-202.
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The 12-300 series of rules for exterior exposed wiring has been modified, limiting the span of overhead single conductors to 4.5 m and requiring spans exceeding 4.5 m to be either a neutral supported cable or insulated conductors lashed to a messenger cable.
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The running board and guard strip rules that were in Rule 12-214 were moved Rule 12-514. As part of this move, the rule was expanded to provide direction on the size of running boards and guard strips and where they should be installed. Guard strips consist of two boards, one on each side of the cable to be protected, and running boards are placed with the cable secured to the side of the running board. In an attic running boards and guard strips are required to measure not less than 38 mm by 38 mm and be installed to prevent damage from a person stepping or kneeling on the cable. To assist code users, Figure B12-3 was added to Appendix B to illustrate the proper use of running boards and guard strips.
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Rule 12-516 Protection for cable in concealed installations has a newly inserted Subrule 2) that requires cables to be installed a minimum of 38 mm from the front edge of studs and joists that can be drywalled. Where the 38 mm clearance can not be met, corrosion-resistant ferrous metal of not less than 1.3 mm thick is mandated to be securely fastened in place, and that will extend beyond the face of the stud or joist in such a manner that it will cover the width of the cable or group of cables.
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Rule 12-518 Protection for cable in exposed installations has also been expanded by added a new Subrule 2) allowing non-metallic conduit or tubing to be used as a sleeve for the mechanical protection of non-metallic-sheathed cables. The ends of the raceway will require a bushing or equivalent to prevent damage from abrasion, and the raceway fill will be limited to the percentages mandated in Table 8.
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Subrule 1) of Rule 12-616 Concealed armoured cable installation has been expanded to similar protection plate and cylindrical bushing requirements. In addition, the cable support reference to Rule 12-510 in Rule 12-618 Running of cable between boxes, fittings, etc., was replaced with the same support spacing requirement of not more than 1.5 m throughout the run and allowance to fish cables. The maximum distance between the cable terminations and the first cable support has changed for armoured cable allowing up to 600 mm for cables with a connector trade size between 35 and 78 and up to 900 mm for cable with a connector trade size greater than 78.
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Rule 12-2202, Insulated conductors and cables in cable trays, has significant changes. First is a new Subrule 1) that recognises the revised definition for cable tray as supporting means for cables. Subrule 3) has been expanded to limit the size of cables marked as TC-ER to not smaller than 1/0 AWG. Subrule 4) provides better clarification on the requirements for mechanical protection and no longer limits runs of cable marked TC-ER outside of a cable tray to 7.5 m. Subrule 5) has removed the reference to Table 19 and provides a list of the thermoset insulated conductors and cables not smaller than 1/0 that can be installed in cable tray in electrical equipment vaults and service rooms, and other locations that are inaccessible to the public and are constructed as a service room where a deviation has been allowed in accordance with Rule 2-030.
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Subrule 2) rewording of Rule 12-3034 Maximum number of insulated conductors in a box. In addition to making the subrule easier to read, a new example table has been added in Appendix B. The subrule now also mandates the largest size of the conductor be used in the conductor count when more than one size of conductor is used.
New Rules:
New Rule 12-022 Cables or raceways installed in roof decking systems no longer allows cables or raceways to be concealed within a roof decking system where the roof systems utilise screws or other metal penetrating fasteners.
Where the roof decking system does not utilize screws or other metal penetrating fasteners like adhesives, this new rule would not apply. In addition, Subrule 2) allows concealed Class 2 wiring in which the open-circuit voltage does not exceed 30 V and embedded trace heat. Where Class 2 circuits and embedded trace heat wiring is concealed within a roof system that utilises screws or other metal penetrating fasteners warning labels will also be required in a conspicuous location in the roof area where the cabling is installed and at all permanently installed roof access points.
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New Rule 12-320 has copied the messenger cable requirements from Rule 30-1116.
Table Change:
Table 19 was first introduced into the CE Code in the Sixth Edition Published in 1953. The first Table 19 was an expansion of Table 1 from the 1947 CE Code that was limited to Conductor Designation, Type, and Maximum Allowable Temperature. In 1953, Table 19 reference rules in Sections 12 only. In the 1958 CE Code, Table 19 was expanded to include Conditions of Use and Trade Designation and to include rule references for Sections 4, 12, 16, 22, 26, 34, 36, and 38.
Over the years, more references were added as the table grew, resulting in the table referencing seventeen sections of the code in the 2009 Edition. Between the 2009 and 2018 Editions of the CE Code, rule references were moved to Section 12. This change gave Section 12 the responsibility to maintain Table 19. For the 2021 CE Code development cycle, a task group was established by the Section 12 Chair. This task group met once a month over eighteen months to develop a new Table 19. The new Table 19 similar to the structure of Table 65 now. It is easier to use, accurate, smaller, and has no notes. The task group reviewed each insulated conductor and cable type for accuracy and missing types and applications. In addition, all 37 notes were removed. Some of the notes were moved to rules in the body of the code, some were moved to Appendix B notes, and the rest were deleted as out-of-date references. One great outcome is that all the information for any one type of insulated conductors or cables is located on a single page, making the table much easier to use.
As an example, all information for insulated conductors (like RW90) can be found on the first page of the new Table 19. Table 19 now has eight pages as follows.
Thermoset insulated conductor, Thermoset cable, Thermoplastic insulated conductor, and Thermoplastic cables
Non-metallic sheathed cable, and Cables not having a metal armour or metal sheath
Cables not having a metal armour or metal sheath, and Extra-low voltage cables not having a metal armour or metal sheath
Fire alarm and signal cable
Cables having metal armour or metal sheath
Cables having metal armour or metal sheath, and 5 kV to 46 kV shielded power cable unarmoured, and 5 kV to 46 kV shielded power cable armoured
Communications cables and Communications cable with limited power
Communications cables
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Table 6, Table 9, and the reference Rule 12-910 Conductors and cables in conduit and tubing has significant changes that should make it much easier to establish the maximum number of insulated conductors that can be installed in a raceway. Other than HDPE conduits, the new Table 6 and Table 9 are accurate for all conduits and tubing types.
The number of Table 6 tables remains the same. The 2018 CE Code Table 6 tables provided the maximum number of conductors that could be installed in conduit or tubing. The 2021 tables provide the mm² area of single conductors and cables for calculating conduit and tubing fill.
Table 9 has been reduced from sixteen tables (pages) to eight tables with two tables each for the allowable fill percentages of 100%, 53%, 31%, and 40% for the various trade conduit and tubing.
Section 14
Rule Change:
New Item f) for Rule 14-014 Series rated combinations that limits the motor contribution into a series rated combination. The maximum rated motor full load currents that can be connected between a series rated combination now can not exceed 1% of the interrupting rating of the lower-rated circuit breaker.
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Rule 14-100 Overcurrent protection of conductors to subrules and the insertion of a new Subrule 2) that recognizes that consumer’s service conductors considered protected by the service equipment overcurrent.
Section 16
Rule Change:
New Subrule 2) was added to Rule 16-202 Methods of installation on the supply side of overcurrent protection, transformers, or devices having Class 2 outputs. The new subrule allows a 20 A rated overcurrent device to protect the supply side of transformers or other devices having Class 2 outputs. The rating of 20 A aligns with the product standards for transformers or other devices having Class 2 outputs.
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Revised Subrule 8) for Rule 16-330 Cables and conductor ampacity for Class 2 power and data communication circuits. The 60 W or less exemption to apply cable bundling rules has changed to the rating of each output circuit supplied by power sourcing equipment not to exceed 0.3 A. The minimum 24 AWG requirement has not changed.
Section 18
Rule Change:
New Subrule 7) has been added to Rule 18-050 Electrical equipment to recognize equipment marked for use in Class/Division locations to be used in locations classified according to the Zone based location classification as permitted by Table 18 where the applicable Group of the Division based location classification corresponds to the equivalent Group within the Zone based location classification as specified in the new Table 18A Equivalent Zone and Division Group classifications.
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Renumbered Rule 18-070 Seals has two new subrules. Sub-rule 3) requires permanent identification when flammable fluid migration seals are used. Subrule 4) now mandates that field installed seals must be accessible after the installation, that splices and taps not be installed in fittings intended to be filled with sealing compound, and that acceptable means must be provided to periodic drain or prevent accumulation of liquid or other condensed vapour from being trapped within enclosures for control equipment or at any point in the raceway system.
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Rule 18-092 Wiring methods, Zone 0 has editorial changes in Subrule 1), a modification to Subrule 2) that all cables with a continuous metallic or non-metallic outer jacket for one or more circuits that are not intrinsically safe and passing through a Zone 0 location be marked “HL”.
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Rule 18-094 Sealing, Zone 0 now requires the seals to be installed at the first cable termination point after entry into a Zone 0 location be of the flammable fluid migration type, in addition where conduit is used no box, coupling, or fitting is allowed between the flammable fluid migration seal and the point at which the conduit crosses the Zone 0 boundary. The most significant change to this rule is the deletion of the exception that allowed a rigid unbroken conduit that passes completely through a Zone 0 area.
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Rule 18-102 Wiring methods, Zone 1 has been clarified detailing that threaded rigid metal conduit requires explosion-proof, flameproof “d”, or flameproof “db” fittings when terminating in a Zone 1 location.
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Rule 18-104 Sealing, Zone 1 include requirements that seals for conduit systems are now mandated to be explosion seals, and these seals must be installed as close as practicable to the enclosure, or as marked and no further than 450 mm from the enclosure. For conduit run with or without couplings and without any equipment, box, fitting, union, tee, or similar device installed entering of leaving a Zone 1 location the explosion seals is required to be within 1 m external to the Zone 1 boundary. Where cable is used, the seal at the first cable termination within the Zone 1 area must now be a flammable fluid migration seal, and explosion seals mandated where the cable enters an enclosure required to be explosion-proof, flameproof “d”, or flameproof “db”
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Rule 18-106 Motors and generators, Zone 1 the increased safety “e” motor increased safety “eb”.
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Rule 18-150 Equipment, Zone 2 locations Capacitors have been removed from the list of ordinary equipment that can be installed Zone 2 locations. The next change to Rule 18-150 is the replacement of “non-explosion-proof or non-flameproof enclosures housing” to “Type 4 or 4X enclosure, or an IP65 or higher enclosure” for non-sparking in normal operation equipment not used for heating purposes. The final change for Rule 18-150 is a new Subrule 4) that allows a non-hazardous location motors and generators with a shaft bonding device typically required for electric motors operating on variable adjustable speed drives, to be installed in a Zone 2 location, provided that the device is used for the purpose of maintaining the rotor at ground potential, and that the potential discharge energy is determined to be non-incendive and authenticated by the person assuming responsibility for the calculation.
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Rule 18-154 Sealing, Zone 2 Seals in this rule have been changed to flammable fluid migration seals for conduit that leaves a Zone 2 location, and to explosion seals for cables or conduit the enter an enclosure that is mandated to be explosion-proof or flameproof “d”, or flameproof “db”, in addition explosion seals are required to be within 50 mm from the enclosure for field drilled conduit entries.
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Armoured cables such as FAS, FAS90, FAS105, FAS150, and FAS200 fire alarm and signal cable have been added to Rule 18-152 Wiring methods, Zone 2 and Rule 18-252 Wiring methods, Zone 22, as an acceptable wiring method in Zone 2 and Zone 22 locations.
Revised Definition:
Special terminology for hazardous locations. The definitions for seals have been re-organized and modified starting with the deletion of the 2018 definitions for cable seal and conduit seal. Seals are now divided into three main types: explosion seals, flammable fluid migration seals, and process seals. Explosion seals are intended to prevent the ignition of an explosive gas atmosphere outside the enclosure, to prevent the passage of an explosion from one portion of the conduit system to another, and to minimize the passage of flammable fluids at atmospheric pressure. A flammable fluid migration seal installed in a cable or conduit is intended to minimize the transmission of flammable fluids at or near atmospheric pressure. A process seal is one or more seals intended to prevent the migration of flammable process fluids into electrical equipment. Process sealing is further divided into the following four types: primary process seal, secondary process seal, dual process seal equipment, and single process seal equipment. A primary process seal, previously know as a primary seal is directly in contact with the process fluids under conditions of normal use. The secondary process seal previously know as a secondary seal is a seal that comes into contact with process fluids only in the case of a primary process seal failure. Dual process seal equipment consists of a primary process seal and one or more secondary process seals installed in series that would require the failure of at least two of the process seals to expose the wiring system to migrating process fluids. And finally, the single process seal equipment consists of a single sealing structure that in the event of failure would expose the wiring system to migrating process fluids. Throughout Section 18 corresponding editorial changes where made to alien the wording with this new definitions.
New Rule:
Rule 18-062 Optical fiber cable allows optical fiber cable types OFNP, OFCP, OFNR, OFCR, OFNG, OFCG, OFN and OFC to be installed in all hazardous locations, this subrule also mandates that provided that the installation meets applicable sealing requirements of Section 18.
Section 20
Revised Definition:
Replacement of “dispensing” to “vehicle fuel dispensers”
New Definition:
New definition for dispensing system that reads: “a system, consisting of tank, pump and motor, propane dispenser, and associated piping and supports, for the storage, metering, and dispensing of liquid propane into containers”. These changes are to align the CE Code with the CSA Standard B149.2 Propane storage and handling code.
Section 22
New Definition:
Rule 22-802 Special terminology has new definitions that read:
Wash-down – Cleaning that includes direct spray of liquid under pressure
Speciality type equipment – Agricultural equipment designed and used for a specific and unique purpose.
Suitably cut off – an area that is separated from and rendered impermeable to an adjoining area with no means of liquid, gas, or vapour communication between the areas at atmospheric pressure.
Livestock – farm animals including, but not limited to, cattle, horses, swine, sheep, goats, poultry, ratites, cultured fish, fur-bearing animals, game animals, game bird, deer, elk, or bees.
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Rule 22-804 Classification of areas classifies farm buildings housing livestock as Category 1 and Category 2 and recognises locations in a farm building housing livestock that are suitably cut off from Category 1 or Category 2 to be considered dry locations
Rule Change:
Rule 22-806 Electrical equipment, luminaires and receptacles Subrule 1) directs code users to Rule 22-102 to 22-108 for installation of speciality type equipment and ventilation fans. Subrule 2) mandates wire connectors to incorporate anti-corrosion compound for electrical equipment is permanently connected to an outlet. Subrule 3) requires overcurrent devices installed in locations suitably cut off from Category 1 or Category 2 locations, or as n alternative installed in a suitable enclosure with continuous positive pressure ventilation as defined in Rule 22-702. Subrule 4) refers to Rule 2-400 for equipment like receptacles and general use switches, installed where wash-down operation is preformed. Subrule 5) does not allow pendant lampholder in farm buildings housing livestock and Subrule 6) requires shatter-resistant lamps where exposed.
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Rule 22-808 Wiring methods In addition to moving requirements from 2018 CE Code Rule 22-204, Rule 22-808 does not allow electrical metallic tubing to be used as a wiring method for farm buildings housing livestock, and requires grounding and bonding conductors, and connections to be protected from corrosion and that raceways, fittings, junction boxes, cable assemblies and associated connectors, devices, and device boxes and covers, be of the corrosion-resistant type.
Section 24
Revised Definition:
The definitions for “emergency power system” and “emergency supply” where replace with a new definition for “emergency electrical power supply system” for consistency with the definition in the CSA standard Z32, that reads; one or more electrical generator sets located on health care facility premises, intended to be available if all other supplies fail, and capable of supplying all loads of essential electrical system. In addition, the use of this term resulted in editorial modifications to Rules 24-304, and 24-306.
Rule Change:
24-304 Transfer switches where the applicable standards for automatic transfer switches are identified as CSA C22.2 No 178.1 for low voltage automatic transfer switches and CSA C22.2 No 178.3 for high voltage automatic transfer switches.
Section 26
Rule Change:
Deletion of Rule 26-008 Sprinklered equipment – to provide consistency between installations of electrical equipment in sprinklered service rooms and installation of electrical equipment in sprinklered buildings outside service rooms and to address a conflict in terminology between the CE Code and the National Building Code.
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Subrule 2) of Rule 26-012 Dielectric liquid-filled equipment — Indoors. The separation of dielectric liquid-filled electrical equipment now only applies if the equipment contains dielectric liquid with polychlorinated biphenyls (PCBs).
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Rule 26-256 Conductor size for transformers Subrule 4) has been modified providing a clarification the Rules 14-100 and 14-104 apply to transformer secondary conductors when the transformer primary or secondary overcurrent is rated graeter than 125% of the transformer rated current.
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The storage battery Rules 26-500 to 26-514 were moved to the Rule 64-800 series of rules
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Rule 26-602 Panelboards in dwelling units was modified for clarity without changing the requirements.
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Rule 26-652 Branch circuits for residential occupancies Item f) that used to read; “the ampere rating of the branch circuit wiring supplying receptacles with CSA configuration 5-20R shall be not less than 20 A”, was deleted as a duplication for existing Rule 26-700 2) that has the same requirement.
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Renumbered Rule 26-656 Branch circuits for dwelling units Items b) and c) have been inserted as an exception to Item a) that will now allow branch circuits from a main dwelling unit to supply equipment and outlets in a dwelling unit that has been created by subdivision of the main dwelling unit, and where a panelboard is installed in each of the dwelling units branch circuits from the main dwelling unit may be used for smoke alarms and carbon monoxide alarms installed in the dwelling unit that has been created by subdivision of the main dwelling unit. This exception also requires clear marking at each panelboard indicating where the smoke alarms and carbon monoxide alarms are supplied from.
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Rule 26-724 Receptacles for dwelling units Item e) was deleted and the requirements moved to Rule 26-700 General (Receptacle) as Subrule 8) This requirement now mandates that all 5-15R and 5-20R receptacles (not just residential occupancies) are not allowed in front of a sink or directly behind a sink except where the distance between the wall and the inside edge of the sink exceeds 450 mm.
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Rule 26-722 Protection of residential occupancy receptacles installed outdoors by a ground fault circuit interrupter of the Class A type was deleted and the requirements moved to Rule 26-704 Protection of receptacles by a ground fault circuit interrupter of the Class A type as Subrule 2). This requirement now mandates Class A ground fault protection for all outdoor receptacles installed within 2.5 m of finished grade (not just residential occupancies).
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Rule 26-720 General (Receptacles for residential occupancies) now recognises a controlled outlet duplex receptacle as an outlet that has an integral switching means to allow remote switching of the connected load. Item k) allows a controlled outlet duplex receptacle to be used as a switched duplex receptacle. Also “public stairways” has been deleted from Item m) this means that receptacles are no longer required in public stairways in buildings of residential occupancy. This change was to align with the National Building Code requirement to maintain integrity of exits.
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Move requirements from the Table 19 to Rules 26-954 Deep well submersible pumps installed in wells and 26-956 Submersible pumps installed in bodies of water and to recognise submersible pump cables in the rules and to replace “plastic water pipe” with HDPE conduit to align with Rule 12-012.
New Rule:
Newly inserted Rule 26-652 Branch circuits below ground level in areas designated as flood hazard zones was proposed as part of the Climate Change Adaptation Project, submitted by the Task Group on Flood and Drought. In areas designated as flood hazard zones defined as a spatially delineated area designated in accordance with the National Building Code of Canada or applicable local legislation as being subjected to a flood hazard, ground fault protection is mandated for all branch circuits located below ground level. It should be noted that the rule applies to all installations (not just residential) and that the ground fault setting is to be sufficient to allow normal operation of connected loads under normal conditions. This ground fault protection is not required to be Class A ground fault protection.
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New Rule 26-712 Sump pump receptacles requires sump pump receptacles installed in building located in a flood hazard zone to marked as suitable for submersion or located above the flood elevation.
Section 30
Revised Terminology:
Rule 30-104 Protection the rule that details the maximum rating of an overcurrent device protecting a branch circuit containing luminaires, lampholders, or lighting track, has been reorganised to make the rule easier to read. This re-organisation did not create any technical changes.
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Rule 30-320 Lighting equipment in damp locations or near grounded metal The words “if the condition in Item a) is not practicable” have been deleted from Item b) of Subrule 3). The rationale for deleting these words was that the wording was difficult to enforce and caused inconsistent interpretation by code users. The rule now clearly allows a switch for a luminaire to be located between 1 m and 500 mm from a bathtub or shower stall, where it is protected by a ground fault circuit interrupter of the Class A type.
Rule Change:
Rules 30-500 to 30-510 Luminaires in buildings of residential occupancy have been deleted from the CE Code as a duplication of existing requirements in the National Building Code. The rules used to apply to the location of lighting and switches in residential occupancies. Electrical contractors will now need to access the National Building Code for these requirements.
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Subrule 3) of Rule 30-1022 Grounding of circuits for the connection of outdoor floodlights supplied from a solidly grounded system has been modified to better align with Section 10. This subrule allows the system bonding jumper to be connected between the luminaire supply bonding conductor and the identified conductor on the secondary of the luminaire transformer.
Section 32
Rule Change:
Rule 32-200 Installation of smoke alarms and carbon monoxide alarms in dwelling
Units The allowance to have a combination of a smoke alarm and a carbon monoxide alarm that has an integral battery as a secondary supply source on a branch circuit that is protected by a ground fault circuit interrupter or arc-fault circuit interrupter was moved to a new Subrule 2). The other change to Rule 32-200 is the deletion of the requirement that interconnection of smoke alarms and carbon monoxide alarms had to comply with Rules 32-100 and 32-102, as smoke alarms and carbon monoxide alarms are not part of a fire alarm system, and such reference is not appropriate. This new change will mandate wiring methods for such interconnection – to comply with Section 12 of the CE Code.
Section 36
Rule Change:
New inserted Item b) to Rule 36-208 Interlocking of fuse compartments. This new item requires high voltage fuse interlocking to include isolating or disconnecting means on both sides of the fuses where the fuses may be energized from either side.
Appendix B Note Change:
Addition of an Appendix B note for Subrule 3) of Rule 36-214 Disconnecting means. The proposal for both these changes was submitted as a result of a recent fatality in Ontario involving low voltage feedback and physical contact on a high-voltage fuse into a station. The wording recognizes the hazards associated with possible feedback from low voltage systems into the high voltage side of station transformers.
Section 42
Rule Change:
Rule 42-004 Receptacles and attachment plugs. A new Subrule 2) was added along with an editorial change for Subrule 1) that allows the overcurrent protection for welder receptacles rated more than the receptacle rating where the overcurrent protection is rated not more than the welder rated primary current. Subrule 2) requires the receptacle to be labelled that it is intended for welder connection only, the receptacle supply conductor size, type (copper or aluminum) and insulation temperature rating, and the ampere rating of the overcurrent device protecting the receptacle supply conductors.
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Expansion of transformer arc welders to include inverter welders; this included adding “and inverter welders” to Rules 42-006 Supply conductors and 42-008 Overcurrent protection for transformer arc welders and inverter welders.
Table Change:
Table 42A Multiplication factors to determine the size of insulated supply conductors for individual transformer arc welders and inverter welders, Table 42B
Multiplication factors to determine the size of insulated supply conductors for individual motor-generator arc welders and Table 42C Multiplication factors to determine the size of insulated supply conductors for individual resistance welders, moving multiplication factors unchanged from the 2018 CE Code Rules 42-006, 42-012, and 42-014 to these new tables.
Section 46
Rule Change:
Rule 46-208 Overcurrent protection for an emergency power supply. A new Subrule 3) was added to align with recent changes to CSA Standard C282 Emergency electrical power supply for buildings. These changes allow installation of an emergency electrical power system without selective coordination between overcurrent protective devices where the emergency power supply overcurrent protective devices installed in a fire pump feeder or in a feeder supplying load banks are permitted to be connected upstream of the main disconnecting means by CSA Standard C282.
Section 58
New Subsection:
New subsection for the grounding of towers and stations for passenger ropeways and similar equipment. The five new requirements cover the size of, location, and the support of the grounding conductor and include a reference to Section 10.
Section 62
Revised Definition:
Redefinition of “heating cable” to “trace heater” that reads: Trace heater — a device of linear geometry designed for the purpose of producing heat on the principle of electrical resistance. This also resulted in changes throughout Section 62, where the term “heating cable” was previously used. The reason for these changes was to align with terminology in CSA Standards C22.2 No. 130-16 Requirements for electrical resistance trace heating and heating device sets, and C22.2 No. 60079-30-1:17 Explosive atmospheres — Part 30-1: Electrical resistance trace heating — General and testing requirements.
Rule Change:
Rule 62-118 Demand factors for service and feeder insulated conductors Item b) of Subrule 5) was modified to mandate that 100% of the loads in Subrule 4) like electric thermal storage heating system, duct heater, or an electric furnace loads be used when applying Subrule 5). This was done to resolve a contradiction with Subrule 4) to read:
b) in the case of other occupancies, 100% of the loads in Subrule 4) plus 75% of the total remaining connected heating load plus the combined loads of the other equipment with demand factors as applicable in Section 8 for the type of occupancy.
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Rule 62-126 Field repair, modification, or assembly of series trace heater sets was modified to clarify procedures, documentation, and who should be doing repairs to series trace heater sets.
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Rule 62-128 Non-heating leads of heating device sets was modified, removing the 50 mm from the floor allowance for non-heating lead to extend through a wooded base plate. Non-heating leads are now permitted to pass through a wooden base plate where the non-heating leads go directly to an enclosure.
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Rule 62-202 Temperature control for electric space-heating systems has a new Subrule 2) allowing trace heater sets and heating panel sets to extend into adjacent rooms and be controlled by a single temperature control device.
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Rule 62-208 Location of trace heater sets and heating panel sets has a new Subrule 3) for the installation of single-conductor trace heater sets and heating panel sets without conductive shields, braids, sheaths, or coverings. These heaters are only allowed in other than industrial establishments, where installed in or above ceilings not less than 2.4 m above the finished floor and when protected by ground fault circuit interrupters of the Class A type.
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Rule 62-316 Impedance heating has been modified to align with a recent certification standard developed for these heating systems. These changes include new voltage limitations, ground fault protection requirements, and a new reference Table 70 Impedance heating requirements — Bonding, ground fault protection, isolation flanges, and hazardous location suitability.
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New Rule 62-318 Hazardous location trace heating was added to direct code users to Section 18 and to mandate the installation requirements in CSA Standard C60079-30-2 Explosive atmospheres — Part 30-2: Electrical resistance trace heating — Application guide for design, installation, and maintenance.
Section 64
Revised Definition:
The definitions for “sealed cell or battery” and “storage battery” were changed to:
Battery — an assembly of more than one cell connected in series, parallel, or both.
Sealed cell battery — a battery that has no provision for the addition of water or electrolyte, nor for the external measurement of electrolyte specific gravity.
With the most significant change being the deletion of “storage” and the addition of a new definition for a “cell”:
Cell — an electrochemical device used to receive, store, and deliver electrical energy.
A new Appendix B note provides a clarification that an assembly of cells forming a battery are part of the standard for batteries in UL 1973, Standard for Batteries for Use in Stationary, Vehicle Auxiliary Power, and Light Electric Rail (LER) Applications.
New Definition:
Rule 64-002 Special Terminology also has the following new definitions regarding energy storage systems:
Energy storage system — a system capable of supplying electrical energy to local power loads or operating in parallel with a supply authority system or any other power sources.
Field-assembled energy storage system — a system with storage capacity not exceeding 1 kWh (3.6 MJ) that has not been evaluated in accordance with UL 9540.
Non-residential use energy storage system — an energy storage system that is not marked as being suitable for residential use.
Residential use energy storage system — an energy storage system that
a) is marked as being suitable for residential use; and
b) conforms to the requirements of UL 9540.
Self-contained energy storage system — a system that conforms to the requirements of UL 9540.
Rule Change:
Rule 64-812 Battery interconnections has two changes; the first is the replacement of the “flexible cable” reference to insulated conductors or cables of the fine strand type. This is also similar to requirements in Section 480.4 of the National Electrical Code. The second change is to allow insulated or bare busbar to be used for battery interconnection.
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Rule 64-816 Wiring methods and installation of equipment in battery rooms moved from Rule 26-514 only had one small change replacing the words “dry location” to “ordinary location” to be consistent with the definition in Section 0.
-Addition of energy storage systems to Rule 64-050 General that will allow energy storage systems to supply a building.
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Rule 64-060 Disconnecting means was also expanded to require a disconnecting means that will simultaneously disconnect all ungrounded conductors from batteries.
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Rule 64-074 Warning notice and diagram now requires the same marking and diagram requirements for energy storage systems as previously required for renewable energy systems.
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Subrule 4) of Rule 64-112 Interactive point of connection has been expanded inserting a new Item e) that reads: e) notwithstanding Items c) and d), the sum of the ampere rating of the overcurrent devices shall be permitted to exceed the rating of the busbar or conductor where means are provided to limit the input and output current of the interconnected systems to ensure the busbar or conductor cannot be overloaded;
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The requirement for ventilation for rooms or areas containing batteries now covered in Rule 64-802 is limited to only batteries vent hydrogen to the atmosphere. Subrule 2) that addresses temperature limitation is not limited to only lead-acid batteries.
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Rule 64-804 Installations previously Rules 26-510 and 64-800 has a new Subrule 1) that mandates batteries to be suitable for the purpose. This means batteries are now required to be approved; this recognises the product standard for batteries UL 1973 Standard for Batteries for Use in Stationary, Vehicle Auxiliary Power, and Light Electric Rail (LER) Applications. The second change for installations is that the output voltage for batteries in dwelling units has been raised from 48 V dc to 50 V dc. This was changed to provide consistency with existing allowances in Section 64. The final change is a new Subrule 6) that requires batteries to be spaced in accordance with the manufacturer’s installation instructions to align with the product standard.
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Change to Rule 64-808 Disconnection of series battery circuits (previously Rule 64-806 was to increase the voltage from 48 V dc to 50 V dc for consistency.
Rule 64-902 Marking has two subrules, first mandates the plaque or directory in Rule 64-074 to be provided to indicate the building or structure contains an energy storage system and the location of all energy storage system disconnecting means. Subrule 2) requires field-assembled energy storage systems to have a nameplate in accordance with Rule 2-100 at a readily accessible location at the disconnecting means for the energy storage system. The nameplate requirements for the self-contained energy storage systems is part of the product requirement.
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Rule 64-904 Voltage of energy storage systems limits the voltage of a field-assembled energy storage system installed in or on a dwelling unit to 50 V dc.
Subrule 2) limits the output circuits for self-contained energy storage system installations in or on a dwelling unit to 600 V, provided that all energized parts in the energy storage system circuits over 150 volts-to-ground are accessible only to qualified persons.
Similar to Rule 64-202 for photovoltaic source and output circuits, Subrule 3) has an exception for the interlocking and visible isolation requirements in Rules 36-204, 36-208, and 36-214 for the dc portion of energy storage systems with maximum voltages higher than 750 V dc but not exceeding 1500 V dc provided that:
the installation is serviced only by qualified persons,
the part of the installation exceeding 750 V dc is inaccessible to the public,
and enclosures in which circuits exceeding 750 V dc are present are marked with the word “DANGER” followed by the maximum rated circuit voltage of the equipment.
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Rule 64-906 Insulated conductors and cables aligns with the product standard requiring insulated conductors and cables used for the interconnection and connection of energy storage systems to have a minimum temperature rating of 90°C.
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Rule 64-908 Insulated conductors marking or colour coding requires insulated conductors for dc circuits to be colour coded or marked as follows:
a) for a 2-wire circuit,
i) red for positive and black for negative;
ii) insulated conductors, other than green or white, with permanent marking at terminations and splices in accordance with Item i); or
iii) insulated conductors manufactured with permanent surface printing indicating the polarity on the insulated conductor; and
b) for a 3-wire circuit (bipolar circuit),
i) white or white with a coloured stripe for the mid-wire (identified as the centre tap), red for positive, and black for negative;
ii) insulated conductors, other than green or white, with permanent marking at terminations and splices in accordance with Item i); or
iii) insulated conductors manufactured with permanent surface printing indicating the polarity on the conductor insulation.
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Rule 64-910 Installations has two subrules, first to align with the product standard Subrule 1) mandates self-contained energy storage systems to be installed in accordance with the manufacturer’s installation instructions. Subrule 2) requires mechanical protection where an energy storage system may be subject to the risk of physical damage or vehicular impact.
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Rule 64-912 Overcurrent protection mandates that dc overcurrent protection must be marked for use on dc circuits, and each ungrounded conductor of an energy storage system must be protected in accordance with Rules 14-100 and 14-104. When establishing the location and size of overcurrent protection, Subrule 2) requires that each source of supply be considered where equipment or conductors are energized from both directions.
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Rule 64-916 Bonding requires that the bonding conductors be sized in accordance with Section 10 based on the largest overcurrent device protecting the circuit conductors. This is significant where conductors are energized from both directions without individual overcurrent protection at each end of the conductor. An Appendix B note was also added to help explain this that reads: Energy storage systems are bi-directional, and fault current can be available from more than one source. Energy storage system circuits connected in parallel can all contribute to a fault; therefore, bonding conductors should be sized according to the largest overcurrent device in the circuit. This rule also mandates that in addition to bonding all non-current -carrying conductive parts of electrical equipment in accordance with Section 10, metal objects such as battery racking, cable management systems, structures, and enclosures housing field-assembled energy storage equipment, etc., must be made electrically continuous and bonded to non-current-carrying conductive parts of electrical equipment.
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Rule 64-918 Location and separation requirements for energy storage systems can be divided into three topics: self-contained energy storage systems, general requirements, and installation in dwelling units. To align with the product standard, self-contained energy storage systems must be installed in accordance with the manufacturer’s installation instructions. The general requirements for energy storage systems location and separations are in Subrule 2), 3), 7), 9), and 10). These subrules limit installations in accordance with the spacing from gas equipment covered in Rule 2-238, do not allow energy storage systems to impede egress from a building does not allow energy storage systems to be located closer than 3 m from a path of egress and entrance or exit doors, and do not allow battery energy storage systems installed below a grade of higher than 23 m unless installed in an electrical equipment vault. In addition, Subrule 7) states:
Energy storage systems
a) directly mounted to a building surface shall have
i) for a single energy storage system, a storage capacity not exceeding 20 kWh; and
ii) for multiple energy storage systems, a spacing of not less than 1 m apart and an aggregate storage capacity not exceeding 40 kWh; or
b) installed in or on a detached garage, storage building, or free-standing structure, shall have
i) for a single energy storage system, a storage capacity not exceeding 20 kWh; and
ii) for multiple energy storage systems, a spacing of not less than 1 m from a dwelling unit and an aggregate storage capacity not exceeding 80 kWh.
Dwelling unit installations are covered by Subrules 4), 5), and 6).
Subrule 4) and 5) do not allow energy storage systems installed outside of a dwelling unit and not to be installed within 1 m of any window, door, or ventilation opening, and do not allow energy storage systems with a storage capacity greater than 1kWh or utilizing lithium-ion batteries to be installed in dwelling units, and any living space of a residential occupancy including clothes closets, storage rooms, bathrooms, stairways, or any other similar undesirable places.
Subrule 6) does permit residential use energy storage systems to be installed in garages of dwelling units, provided that:
a) the storage capacity of any single energy storage system does not exceed 20 kWh; or
b) aggregate storage capacity of multiple energy storage systems does not exceed 40 kWh and the energy storage systems are spaced not less than 1 m apart.
An exception for Subrules 6) and 7) allows energy storage systems to exceed the limitations above provided the systems are marked with “THIS EQUIPMENT MEETS THE CELL LEVEL PERFORMANCE CRITERIA OF UL 9540A.”
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Rule 64-920 Battery installations has two subrules, first for self-contained energy storage systems that mandate that the batteries be installed in accordance with the manufacturer’s installation instructions. The reason for this subrule is that large self-contained energy storage systems are typically shipped without the batteries installed. As part of the certification, the self-contained energy storage systems have specific installation instructions for the batteries. Subrule 2) requires batteries installed as part of field-assembled energy storage systems to be installed in accordance with Rules 64-800 to 64-820.
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Rule 64-922 Diversion load controllers prohibits the use of the supply authority system as a diversion load as the primary means of regulating the stored kinetic energy of an energy storage system.
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Rule 64-924 Ampere rating of energy storage system circuits considers an energy storage system interconnected with a supply authority system to be a continuous load for the application of Rule 8-104. Where the output of an energy storage system supplies dedicated loads or other power systems, the continuous load can be determined in accordance with Rule 8-104 3). Subrule 1) of Rule 64-924 provides direction on how the energy storage system circuits maximum current is established as follows:
a) for an inverter output circuit, the inverter continuous output current rating;
b) for an inverter input circuit, the continuous inverter input current rating when the inverter is producing rated power at the lowest input voltage;
c) for the output of a dc-to-dc converter, the dc-to-dc converter continuous output current rating;
d) for a charge controller, the input current while charging; and
e) for a self-contained system, the rated current indicated on the energy storage system nameplate(s).
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Rule 64-926 System charge control mandates that field-assembled energy storage systems have equipment to control the charging process, limited access by qualified personnel to adjustable settings for the control of the charging process and that diversion charge controllers be installed in accordance with the requirements of Rule 64-820.
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Rule 64-928 Working space and accessibility to energized parts mandates that energy storage systems meet the working space rules in Section 2 along with Rule 2-202 that covers guarding of live parts. In addition, field-assembled energy storage systems installed in dwelling units are not allowed to have exposed energized parts. The working space requirements internal to self-contained energy storage systems are covered by the product standard; as such, the self-contained energy storage systems must be installed in accordance with the manufacturer’s installation instructions.
Section 72
New Rule:
New Rule 72-002 Special terminology has been added with three new definitions that read:
Recreational vehicle lot – a designated area of a recreational vehicle park intended to accommodate one or more recreational vehicle stands, recreational vehicle supply equipment, surrounding natural features, and associated recreational amenities.
Recreational vehicle lot supply equipment – electrical equipment located at a recreational vehicle lot for the purpose of supplying electrical power to one or more recreational vehicles.
Recreational vehicle stand – that area of a recreational vehicle lot dedicated for the placement of a recreational vehicle.
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New Rule 72-112 Recreational vehicle lot supply equipment was part of the proposal for Rule 72-102. This new rule provides direction on where the supply equipment is to be located, including figures in Appendix B, and that the supply equipment for recreational vehicle lots are to be located not less than 600 mm above grade and not more than 1.2 m above grade
Rule Changes:
Rule 72-102 Calculated load for services and feeders was not an IAEI proposal, it was submitted by an IAEI member. This proposal completely changes how load calculations will be completed for mobile home and recreational vehicle parks resulting in calculations that are easier to complete, more accurate to simulate actual loads, and are based on wattage aligning with Section 8. These calculations also include a new Table 71 Calculated load for services and feeders for recreational vehicle parks (based on recreational vehicle lots from highest to lowest watt rating) that is used with the new Subrule 5).
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Rule 72-104 Feeders was deleted to remove a possible conflict with Section 10 regarding the need for bonding conductors.
Section 86
New Rule:
Rule 86-304 Disconnecting means has two significant changes. The first is Subrule 2) Item b) from the 2018 CE Code was deleted, no longer requiring the disconnecting means to be within sight and accessible to the electric vehicle supply equipment. The second change is a new Subrule 3) allowing a single disconnection means for two or more electric vehicle supply equipment assemblies to be supplied by the same branch circuit, provided that the circuit is rated not more than 60 A.
