Table
Ambient Temperature Review Reference for Conductors
Ambient Temperature Review Reference for Conductors reference with assumptions and boundary notes.
Reference boundary
Climate review reference only. It does not apply ampacity correction, set conductor ratings, or determine code compliance for an installation.
Reference table
Compare representative Canadian outdoor temperature review values before a conductor ampacity review.
| Location | Province/territory | Summer review (C) | Winter review (C) | Review use | Boundary |
|---|---|---|---|---|---|
| Vancouver | BC | 25 | -7 | mild coastal review | climate screen only; ampacity correction and conductor selection need current source review |
| Calgary | AB | 29 | -32 | large seasonal swing review | climate screen only; ampacity correction and conductor selection need current source review |
| Winnipeg | MB | 31 | -35 | hot summer and cold winter review | climate screen only; ampacity correction and conductor selection need current source review |
| Toronto | ON | 30 | -20 | southern Ontario review | climate screen only; ampacity correction and conductor selection need current source review |
| Montreal | QC | 30 | -24 | humid summer and cold winter review | climate screen only; ampacity correction and conductor selection need current source review |
| Halifax | NS | 27 | -15 | coastal Atlantic review | climate screen only; ampacity correction and conductor selection need current source review |
| Yellowknife | NT | 24 | -40 | northern cold-weather review | climate screen only; ampacity correction and conductor selection need current source review |
Use notes
- Use this table for preliminary reference and arithmetic checks only.
- Confirm equipment ratings, product markings, installation conditions, utility requirements, and the local authority requirements before design or field use.