On Nov 21, 5:06*pm, Michael B wrote:
Anybody happen to know how much initial startup amperage
is used for a furnace just coming on, starting its vent motor,
and running the glow starter for a gas furnace?
I'm needing to know what a reasonable generator capacity
would be without overdoing it.
Thanks.

What size blower. Condition and age can make a difference if the motor
is worn. Get a clamp on amp meter and test yours, mine takes about 350
running and 700 startup, that is when it was new.