Forum Discussion
dougrainer
Aug 23, 2017Nomad
A 4k Onan will run 2 AC units, but be at its limit. A 5.5K Onan has 1500 watts to spare. You ALWAYS run the 2nd AC from the 2nd breaker on the Onan. Now, it seems between you and the dealer, the Onan feed wiring is NOT correct. You moved to the other breaker but if NOT wired correctly, will not work correctly as you found out. The MAIN Onan breaker should feed the Auto Transfer Box. The 2nd breaker should feed the 2nd AC. UNLESS you have 50 amp service. You need to state which service you have---- 30 or 50 amp. That makes a difference in how the Onan wiring is set up. Doug
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