This is when having an EMS with the display or a clip on ammeter would be really handy..
I'd expect for the offending circuit to produce a pretty dramatic drop when you flip it on.
So .. all breakers off, camper plugged in, 120 at the pole.. then the voltage just gradually dropped as you switched things on? Everything is unplugged from outlets?
Could be a GFCI going bad or a bad connection on one of the outlets (or at the panel in the camper)
I think if it was me I'd try another pole, if that's an option.
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2017 Heritage Glen 368RLHBK Limited
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