Although you CAN power up the generator while plugged in to shore power (and as far as I know, the transfer panel will automatically go to the generator when it's on) - I use the same precautions I do regardless of whether I'm plugging in / unplugging, or starting / shutting down the generator. In short - make sure no high current devices are on line (A/C, washer / dryer, electric WH).
Over time, We've accidentally blown up one generator control board and one surge capacitor on the washer by not being more careful (and informed) about these procedures.
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Norm & Janet
FMCA; WIT; FCOA; Good Sam; Passport
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