Start up wattage

[DFBonnett]

How would I determine the startup wattage for the blower on a forced-air furnace?

 

[bud16415]

I'm not a pro. I think i would put a clamp on amp meter on the line in and try and catch the spike as the motor starts.

 

[Jeff Handy]

Good advice, bud16415.

But first, DF, tell us why you need to know this.

Most breakers or fuses will tolerate a brief over-current draw from a motor as it starts up.

 

[DFBonnett]

I'm considering a back up generator and what capacity may be required.

 

[user 4883]

check the nameplate on the blower motor.
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