[steve s]

Thanks, Marty, I'm glad to help. Nobody is born "elecrical." Electricity physics is eye-glazingly complicated and attempts to boil explanations down to quickie mathematical derivations, simple statements, or analogies almost always involve erroneous statements. It's even worse when the subject of heat flow and thermodynamics comes up. Fortunately, people can make their peace with the complexities and come up with rubrics that permit rules that are both practical and true enough for our use, like, "lower voltage needs higher amperage and heavier wiring."