AC voltage and line loss
Hey guys, I have a 96 Bounder 34j with two brand new Coleman 13,500BTU AC units.. the weather is extremely hot right now and everyone is running their AC’s... even with my Hughes Autoformer I’m runnin...
Forum Discussion
First confirm that both meters are accurate or at least the same. Measure on a inside plug that is on a lightly loaded circuit with the A/Cs running. Essentially you will be measuring the panel voltage which should be reasonably close to the the actual A/C voltage.
The recommended sustained load is 80% or 24A. A/Cs represent sustained loads. Therefore only one A/C or turn off other equipment. The US standard is 120V +- 10%. a little below 108V may be OK but check your equipment specs. Otherwise expect to have overheated plugs and/or shorter equipment life. And overheated plugs often means more loss at the plug and hence more voltage loss at the plugs.
Are the 30A male plugs bright and shinny? And if not sure about the female plugs then replace them.
And if the 29A is after the autoformer then the pedestal amps are higher, maybe even above 30A.
Plus RVs bounce and vibrate down the road and connections become loose. Recommend you check EVERY connection be be sure it's bright, shinny and tight which should be a periodic maintenance item.
The recommended sustained load is 80% or 24A. A/Cs represent sustained loads. Therefore only one A/C or turn off other equipment. The US standard is 120V +- 10%. a little below 108V may be OK but check your equipment specs. Otherwise expect to have overheated plugs and/or shorter equipment life. And overheated plugs often means more loss at the plug and hence more voltage loss at the plugs.
Are the 30A male plugs bright and shinny? And if not sure about the female plugs then replace them.
And if the 29A is after the autoformer then the pedestal amps are higher, maybe even above 30A.
Plus RVs bounce and vibrate down the road and connections become loose. Recommend you check EVERY connection be be sure it's bright, shinny and tight which should be a periodic maintenance item.
