> Does your subpanel have a main breaker in it? If so, the wire would need
> to be at least big enough for that.
Nope, no breaker for the entire subpanel, in either the subpanel or the main
> Otherwise, I'd want wire big enough to handle any possible load you could
> configure in that subpanel. Not sure how practical that would be.
Agreed. But since the subpanel is only a couple of inches away from the
main panel, using "main line" gauge wire to feed it was probably cheaper
than another breaker for it.
> In either case, I'd want to check codes...
Always a good idea. I assume my installation met code in 1968 since there
was a permit taken out, but there have been just a couple of changes since
then <G> And there are a few other oddities that lead me to believe corners
were cut that perhaps should not have been cut.