Originally Posted by GaryKD
My Surge Protector Power Transformer takes 1 AMP of power when operating at full capacity. This 1 AMP is part of the electricity I receive from the 50 AMP power post at the site I am renting. The transformer does not add any extra load the the CG's electric system. The power used by the transformer should already have been calculated into the CG's electric capacity as it is included in the power that I can use any way I want, up to the maximum allowed by the power post.
I'm not going to get into the argument as to whether or not Autoformers add to campground loads. Because of the fact that (at least in Summer) much of the loads are AC motors, whether or not the increased voltage at the AC lowers the amperage enough to actually save power can only be proved by a field test - maybe at a rally?
As to your using the maximum power available at the campground pedestal, it is worth pointing out that a campground wired to the NEC regulations does not have to supply the rated power at each post. Just like your house, they have a "Demand Factor" used for the design. Table 551.73 lists the factors which vary with the number of sites. 1 site is at 100%, 10-12 sites 50%, 36+ sites 41%. Obviously, if everyone at a large, fully occupied campground pulled the full amount at each pedestal, there would be a problem!
I personally feel this demand factor should be adjusted more conservatively since modern RVs tend to draw far more power than when the original table was made, but the only thing the NEC has added is a FPN (fine print note) "These demand factors may be inadequate in areas of extreme hot or cold temperature with loaded circuits for heating or air conditioning."