Running Roof ACs in Pairs

[dmason]

At CG this weekend was trying to run #2 (mid-coach) and #3 (bedroom) ACs with little success. One or both would drop off and then come back on line. Then ran #1 (front-coach) and #3 together. No problems with that combo running all weekend. So I assume #2 and #3 are on same leg of electric coming into the coach and that leg can't support the load??? And then running #1 and #3 together was okay because they weren't on same leg ???

Coming home ran #1 and #2 off gennie with no problems. Why the diffrence between CG electric and gennie electric capability?

[Oh-one]

You are right, the middle a/c was added to a system where there is only two sources. If the a/c add togeather on a single hot leg, they could exceed the available amps on that leg.

[RJay]

I think you'll find the answer is in how these loads are set up in your EMS in relation to a 30, 50 and the generator source.