>I have never seen a residence with a 200 amp service yet that was maxed out and drawing anywhere near that, generally they if fully loaded draw about 100 amps with a large load.
Well, if everything that could be on were running at the same time, including the curling irons and hairdryers, I've seen a lot that could be close and no small number would be over. I will grant that there are seasonal appliances that would not normally operate simultaneously. But does that mean that I should not be able to use a bypass to test the electrical heat in the summer since the a/c might come on?


>which means that a 100 amp service is probably 4x larger than what is needed
on average. But the average is not representative of the peak amps. I think 200 A should be the minimum busbar rating.