Maker Pro
Maker Pro

15 vs 20 amp circuits


David Williams

Jan 1, 1970
-> Also, does on GFI protect the entire circuit on which it is located or do I
-> need to install more? My basement, like so many, sometimes gets wet when the
-> outside drains are blocked.

Most GFI outlets are of the "feed through" type. There are two pairs of
terminals (plus ground). You connect one pair, live and neutral, to
the main breaker box, and you use the other pair to feed other
outlets. When it's wired this way, the GFI does protect all the outlets
that are fed through it.

But if you just put a GFI outlet in place of one that's in parallel
with some other outlets, then the other outlets are not protected. The
current has to pass through the GFI in order to trip it when a fault