What wire size and breaker for heater???

[Dan Bolton]

I have a new duct heater and I want to make sure I am using the correct wire and breaker on the heater and the breaker panel. For some reason I can't post a photo, but the sticker says

Warren Electric heater with Integral Limit Control

Model WGO1002B 240volt 1PH 1Step 60 HZ 39.6amps

TAG: HKR-10C

Any hell would be greatly appreciated.

Dan

[Charley L. Bottger]

With that amount of amperage it would require # 8 copper wire with a 50 amp double pole breaker. Being you are asking this question I would highly recommend having a qualified contractor install for you

[Brian A. MacNeish]

Originally Posted by cbottger

With that amount of amperage it would require # 8 copper wire with a 50 amp double pole breaker. Being you are asking this question I would highly recommend having a qualified contractor install for you

Does your electrical code have the "125% rule" for intermittent fixed electrical heat?

Using the above....... In Canada, if the #8 NMD wire is rated for 40 amps (Can. Code), the breaker may be rated at 50 amps (40 x 1.25)

Or is the #8 rated at higher than 40 amps?

[Charley L. Bottger]

Originally Posted by Brian A. MacNeish

Does your electrical code have the "125% rule" for intermittent fixed electrical heat?

Using the above....... In Canada, if the #8 NMD wire is rated for 40 amps (Can. Code), the breaker may be rated at 50 amps (40 x 1.25)

Or is the #8 rated at higher than 40 amps?

Nope