Originally Posted by Filthy Beast
Happened to my brother also. The company the electrician works for paid for all repairs.
I fully can understand this, and it being on the (3 wire) 30 amp RV's which have a (L1) hot line, neutral, and ground. They mistakingly wire the neutral with a second hot line (L2). So you then have 120 volts on the L1 and then another 120 volts on what should be the neutral.
A 50 amp RV utilizes a 120/240 split phase service. They utilize each side of the service separate as only 120 volts per L1 and per L2. Thus when a 50 amp RV uses the 50 to 30 amp adapter, it actually shares the L1 and L2 legs (combines them), so both sides get power from the 30 amp plug. but it's still only 120 volts. However, if you use an adapter and plug into a miswired outlet, as in the paragraph above, then you also get 240 volts to each side (which is what happened to BombDoc)
What I'm not following/getting my head clear on....is what happened on the generator 240 volt plug. It has 4 wires...... L1, L2, neutral, and ground....all wired correct (or we assume the manufacturer has them correct, but it could be wrong internally and would explain it, as well as the OP having a claim against them).
Unless the OP made their own miswired adapter (mixed neutral/ground and hot line), I'm not understanding what happened to get 240 volts onto a line. I know I must be missing the simple, and maybe just don't understand the generator setup, which I'm about to educate myself on