Re: Electrical Loss?
A standard house outlet can supply no more than 15A so I find it difficult to believe that the RV is a significant share of that power drain. Even if you are drawing 100% of the rated voltage, which is not likely, the very most power that you could consume in a month without tripping the house circuit breaker would be 972 KWh. In most cases the cost per kilowatt hour is less than twenty cents. That would mean a price of $194 if you pay that much and if you use the absolute maximum power constantly, all day every day.
If you check the power bill you can easily find out what they are paying. It is probably much less than $0.20/KWh. And I'd bet that you are drawing 10A at most and probably not that much when averaged over the 24 hour period. If you use 10A, and at a rate of $0.15, you then see a bill of $129.
I don't have any way of knowing the amount of power that is normally used in that house, but I have serious doubts that you are the cause, even if your cord is bad and you are wasting a large amount of power.
Another factor is that when you add an extension cord that is too small for the load that you are drawing, the long cord wastes power just getting the current to the RV. I am sure that has some effect on what you are seeing, but I still do not believe that your RV is the answer.
