In article ,
Puddin' Man wrote:

I switch off the main breaker and use a gas powered 40A generator
to backfeed the 30A (220v) circuit for the elec. dryer.

What can I expect? Live circuits, dead circuits? Overload
conditions??

Dead linemen?

Yeah, yeah... You switched off the main breaker, but, in your urgency and in
the dark, flipped the WRONG breaker.

Properly install and use a transfer switch or just run some extension cords to
essential appliances during the outage.
--

JR

Climb poles and dig holes
Have staplegun, will travel