Canadian Electrical Code Part 1 – “According to the wiring methods required in the cold air return duct of a furnace, it is placed between the lighting fixtures of a combustion building. This amendment to Part 5 emphasizes the existing building code requirement that cable run in the air duct of a combustion building. Must be rated FT6.”
The second amendment to Chapter 12 is Rule 12-020, which relates to wiring under raised floors for data processing and similar systems. Liquid-Dense Flexible Conduit as a Wire Option Removed as unnecessary because recent revisions to Rule 12-1302 allow liquid-dense flexible conduit to be used as a common wire method. The main change to rule 12-020 is to allow the use of a high voltage cable up to 4.5 m long as a wiring method on raised floors for data processing. In addition, cables running through high data processing floors must now terminate directly below the data processing equipment.
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New rule 12-022 Enclosed cables or rails in roof systems prohibits the concealment of cables or rails within the roof system when the roof systems use screws or metal penetrating fasteners.
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If the roof system does not use metal penetrating fasteners such as screws or glue, this new rule does not apply. In addition, part 2) allows the concealment of type 2 cables with an open circuit voltage not exceeding 30 V and a built-in heat trace. Where Class 2 circuits and heat conductors are installed concealed within a bolt or metal permeable roofing system, warning signs shall also be required in a visible location on the roof where the cable is laid and fully installed. Roof access points. .
Table 19 was first included in the sixth edition published in 1953. First table in 1947. The extension of Table 1 of the CE code is limited to conductor designation, type and maximum permitted temperature. In 1953 the reference rules of Table 19 were given only in Chapter 12. Appendix 19 of the 1958 IS Code included terms of use and trade name and rule references to Sections 4, 12, 16, 22, 26, 34, 36 and 38.
Over the years, as the table grew, more references were added, so that the 2009 edition included seventeen parts of the code in the table. From 2009 to 2018, references to the CE Code approval rules were moved to Chapter 12. This amendment imposed on Chapter 12 the duty to preserve Table 19. For the 2021 CE Code development cycle, 12 department chairs formed a group. This task force met once a month for eighteen months to create a new table. Table 19, similar to the current table structure. It is easier to use, accurate, smaller and has no annotations. The task force examined each conductor and insulated cable type for accuracy and missing types and applications. In addition, all 37 records were removed. Some of the comments were moved to the regulations in the version of the code, some were moved to Annex B comments and others were deleted as outdated references. The best result is that all the information about the insulated wire or cable is on one page, making the table easy to use.
For example, all the information about insulated conductors (eg RW90) can be found on the first page of the new issue. Table 19 consists of eight pages.
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The task group is incomplete; We are currently working on tables 11 and D1 and plan to prepare changes to these tables by 2024. CE code.
To amend Rule 12-106(2) relating to multi-conductor cables and single-conductor cables to supply or control equipment on cables of different voltages, the comment was amended.
. The goal is to identify the “remote device” prefix. The same change was made in regulation 12-904, for insulated conductors in race tracks, and in general 12-3030, for boxes, cabinets or installations.
Handle and tube. Exposed wires, also known as pipes and conduits, are omitted in rules 12-200 through 12-224. The conduit and wire method was introduced in the first edition of the Canadian Electrical Code, published in 1927. New wiring arrangements of tubes and pipes were replaced by cables in the 1950s, and in 1958 the CE code was published for connecting equipment boxes (then called grunts). Because conduit and conduit are still available, Titles 12-204 and 12-206 will continue to provide guidelines for wiring conduit and conduit in accordance with the revised regulations.
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Rule 12-204, requiring the installation of insulated conductors on racetracks, has been amended and renumbered as Rule 12-202.
The 12-300 series rules for outdoor wiring have been changed to limit the spacing of additional wires to 4.5 m and to require distances greater than 4.5 m to have insulated wires for the neutral support cable or messenger cable. In addition, new rule 12-320 moved the messenger cable requirements from rule 30-1116.
The council and guardian regulations in rule 12-214 were transferred to rule 12-514. As part of this move, the rule was expanded to specify the size and location of dashboards and drives. The shields consist of two panels, one on either side of the shielded cable, and the work panels are installed on the side of the work panel with the cable. On the roof, running boards and safety rails should be at least 38mm x 38mm and should be installed to prevent injury to a person walking or kneeling on the wire. To assist users of the code, Figure B12-3 has been added to Appendix B to illustrate the proper use of workbenches and drives.
Rule 12-516 Cable Protection for Enclosed Installations has a recently added Appendix 2 that requires cables to be installed at least 38 mm from the rear and front ends of connectors where they can be dried. If a clearance of 38 mm cannot be met, corrosion-resistant ferrous metal with a thickness of 1.3mm shall be firmly installed and shall extend across the arch or beam to cover the width of the cables or group of cables.
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Rule 12-518 Protection of Cables in Exposed Facilities has also been expanded to include a new Part 2 allowing the use of non-metallic conduit or conduit as a sleeve for mechanical protection of non-metallic cables. Filler or equivalent shall be required at the end of the lane to prevent wear and lane fill shall be limited to the percentages shown in Table 8.
To comply with the nonmetallic cable regulations, Rule 12-616, Section 1, has been expanded to include requirements for the concealed installation of armored cables, a similar protective plate, and a cylindrical bushing. Also, Rule 12-510 in Rule 12-618 applies to cable supports, boxes, fixtures, etc. Replaced with the same requirement that the distance between the posts should not be more than 1.5 m and that fish cables are allowed. . The maximum distance between the ends of the cable and the first cable is changed for armored cables to 600 mm for cables with connector sizes between 35 and 78, and to 900 mm for cables with connector sizes greater than 78. .
Table 6, Table 9 and Reference Rule 12-910 Conduit and Conduit contain significant changes that should make it easier to determine the maximum number of insulated conductors that can be placed in a raceway. Except for HDPE pipes, the new Tables 6 and 9 are accurate for all types of pipes and tubes.
In Table 6, the number of tables remains the same. In 2018, Table 6 of the CE code sheets specifies the maximum number of conductors that can be installed in pipes or tubes. Tables 2021 show the area of wires and cables in square meters for calculating the filling of pipes and tubes.
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Table 9 was reduced from sixteen tables (pages) to eight tables, with coverage of 100%, 53%, 31% and 40% for the various trade channels and pipelines.
We will now look at an example of installing ten – 1414 AWG RW90 uncoated 600V stranded conductors on solid metallic conductors. To determine the pipe size, start with Table 6A, which shows that the total cross-sectional area of 14 wires is 88.67 mm. Now go to Table 9G to fill up to 40%. 40% A commercial 16-gauge metal conductor has a cross-sectional area of 80.93 mm, Not enough for ten No. 14 AWG (88.67 mm) conductors. 40% 21 Commercial-size rigid metal conduit having a cross-sectional area of 141.6 mm; For ten #14 AWG conductors it’s too big.
Rule 12-2202 “Insulated conductors and cables in cable trays” makes significant changes. First, a new paragraph (1) introducing the amended definition
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