Reference boundary

Ontario secondary-suite source-navigation only. It does not publish secondary-suite load calculations, load values, service-size conclusions, permit answers, or legal compliance decisions.

Reference table

Point to official Ontario, municipal, and CSA source pages relevant to secondary-suite load review.

Reference basis uses ESA Bulletin 8-3-16, municipal secondary-suite or additional residential unit guidance, and CSA Canadian Electrical Code source navigation.
Source areaCurrent sourceReview useBoundary
ESA Bulletin 8-3-16Maximum circuit loading and demand factorsUse this secondary-suite load source before reviewing load calculation context for suites or dwelling additions.source-navigation only; no secondary-suite load calculation, load value, demand factor, or service-size conclusion is reproduced
Municipal suite guidanceMunicipal secondary-suite or additional residential unit guidanceUse this municipal source path to confirm local suite permitting and planning context before project review.source-navigation only; no secondary-suite load calculation, permit answer, zoning answer, or approval decision is reproduced
CSA CEC source ownerCSA Group Canadian Electrical Code source navigationUse this public source-owner page to identify the national source path before code-product review.source-navigation only; no secondary-suite load calculation, licensed standard text, or compliance answer is reproduced
Use notes
  • Use this table 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.