pianotuna wrote:
Hi Lady Fitz,
It is my understanding that 50 amp cords for RV's are #6 wire, not #10, so the voltage drop should not be an issue, except at the pedestal.
I do observe significant voltage drop on the 30 amp service on the order of 10% when running 2400 watts (30 foot run to the pedestal with #10 wire). I try to never exceed 2880 watts on a continuous basis.
Yes, 50A cords are 6AWG. I was discussing the highest load scenario on the run from the breaker that feeds the Cheap Heat. That will be 10AWG. However, when calculating voltage drop, one has to factor in all potential resistance, including the power cord running to the RV from the pedestal, and even the wiring feeding the pedestal as well as the total load in the RV and the system feeding the pedestal. Adding insult to injury, loads are highly variable so one has to calculate for worst case scenarios. Even worse, in the case of the pedestal and its feed, you have no control over the variables short of resorting to an autoformer (which will cost you amperage in low voltage events, another ugly variable to deal with) or moving.