I have contacted RV dealer service departments with the question......'where does the shore power go first.....This is a 40 Diesel pusher, with converter/inverter & a big generator., transfer switch. Everything works on generator.....no shore power. I have checked the actual 50 amp cord and it checks out fine. So begging the question.....two RV dealers told me it goes directly to the inverter and then feeds out of it......I don't believe this is correct. My RV manual shows it going directly to the transfer switch and then feeds out of that device..... which do you think is the right answer. Obviously it would ease my search to know what leg to inspect.