Forum Discussion
cbeierl
Jan 03, 2016Explorer
CatchinBluegill wrote:
And the winner is... zman-az! :-)
There's a 20A breaker for the optional (but not installed) washer-dryer, which was switched to off (might have been that way for the life of the vehicle), and naturally, that's the one that makes up the second leg of the 50A service. As soon as I switched it on while resetting all the breakers, the EMS switched to 50A.
Thanks again to everyone who responded, I've put your suggestions together into a troubleshooting list that I'll save for future reference (and hope I won't need :-)
That still doesn't explain the voltage weirdness, so I still plan to check the connections at the vehicle end of the cable, but at least the 50A issue is solved.
-Jonathan
The EMS system uses that line on the second leg of the 50A service to detect the presence of 50A vs 30A. A washer/dryer circuit is a typical circuit that's chosen. With that breaker off the EMS couldn't properly detect the 50A service and thus defaulted to 30A.
About Motorhome Group
38,763 PostsLatest Activity: Dec 13, 2025