Scope

CEC copper ampacity source-navigation only. It does not publish copper ampacity values, conductor-size tables, temperature columns, correction factors, derating values, or conductor approval decisions.

Lookup table

Point to Canadian public source pages relevant to copper conductor ampacity table review.

Scroll sideways to keep row labels aligned with hidden columns.

Lookup basis uses CSA Canadian Electrical Code source navigation, ESA Ontario Electrical Safety Code navigation, and provincial code-adoption source navigation.
Source areaCurrent sourceReview stepBoundary
CSA CEC source ownerCSA Group Canadian Electrical Code source navigationReview the copper ampacity source to locate the current code-product path before ampacity review.source-navigation only; no copper ampacity value, conductor-size row, temperature column, or licensed table text is reproduced
ESA OESCOntario Electrical Safety Code pageOpen this page to confirm the current Ontario code cycle before using any Ontario ampacity source.source-navigation only; no copper ampacity value, Ontario amendment, conductor approval, or inspection answer is reproduced
Provincial code adoptionProvincial electrical-code adoption and authority navigationUse provincial source navigation before applying any local code edition or amendment context.source-navigation only; no copper ampacity value, local amendment text, derating value, or compliance answer is reproduced
Notes
  • Check table values only for source-navigation and current source-area review.
  • Confirm the current source document, product marking, utility page, or authority guidance before any design or field decision.