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.
Rule 4-004 Ampacity of wire and cables
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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