Voltage Drop - NOT Park Problem
Phoenix Cruiser 2551 30a service - First noticed it when A/C turns on then stumbles. Voltage at another RV outlet dropped well below 100. Capacitors good. A/C working fine until this point. A/C did...
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Since the problems are the same on shore power and generator power, I'd guess relays inside the transfer switch but you replaced that so it's not that. Broken wire inside insulation or bad connection of a lug to wire.
