@twinboat is on to something here. The "50amp" power actually two 50a,120vAC circuits. If some of your AC circuits do not work and some do, it could be that one of the Xfer switch relays are bad. If you don't have one already, get one of those plug-in-GFI testers; they run $5-$10 at places like Home Depot or Lowes. Then, after you follow OLYLEN's suggestions, power up and try every outlet with the tester.
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... Rick P.
07 Signature. (Prev: 00 Dip, 02 Dyn, 05 Sig).
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