Forum Discussion

travelrn2013's avatar
travelrn2013
Explorer
Apr 26, 2014

A/C can only run by itself, anything else trips it

We are now in Southern Texas and it's already a 100 degrees. Fifth wheel 33 ft with one middle a/c unit and 30 amp. I am packed in shade. It's not keeping very cool except in middle near it though ...
CA_Traveler's avatar
CA_Traveler
Explorer III
Apr 26, 2014
Second AC on 30A. Both will not run at the same time on 30A if they are the larger units. And you are already having trouble with one AC.

You could add a second AC and a second 20A power cord.

There are several basic ways to upgrade to 50A. They are all involved and somewhat expensive. But once done you'll have 12,000 watts of power vs 3,600 for 30A and you can run everything at the same time all day long.

About Technical Issues

Having RV issues? Connect with others who have been in your shoes.24,343 PostsLatest Activity: Dec 11, 2025