New STANDATA Bulletin 21-ECB-004 – Section 4 Conductors

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June 27, 2022

This clarifies select rules of Section 4 of the Canadian Electrical Code, Part I (CE Code), which applies to conductors for services, feeders and photovoltaic circuits.

Discussion
Rule 4-004 Ampacity of wire and cables

Underground Installations

The Appendix B note on this item references “defined assumptions”…

It is the intent of this Rule that where ampacities of underground installations of cable size 1/0 and larger are based on conditions of use other than those set out in the foregoing notes or the defined assumptions preceding them, they should be justified by precise calculation based on IEEE 835.

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