Having trouble understanding GFCI problem
I have my MH in a storage lot with low capacity electrical hookup for battery charging. Three of us are hooked into one box. After the initial bulk charge for a few seconds mine drops off to below ...
Forum Discussion
DrewE wrote:mikestock wrote:DrewE wrote:
(I'm wondering why this place has 20A receptacles protected by a 30A breaker, but as I'm not the local electrical inspector I guess it's really none of my business.)
The 30 amp breaker feeds at least 3 boxes. All GFCI breakers on the shelf at Lowes ar either 15 or 20 amps. 30 amp GFCI's may be available but are apparently not too common.
30A GFCI breakers are indeed available and not too hard to find, though they aren't generally at Home Depot and similar stores.
30A GFCI RV receptacles are not available, or at least I've never seen nor heard of them.
I don't think code ever allows 20A receptacles to be on a circuit with 30A overcurrent protection, GFCI or none, multiple receptacles or not. You would need to have a 20A breaker or fuse to limit the current to the receptacle. The only case I'm aware of where you may have receptacles that are rated for less current than the breaker or fuse is that it's permitted to have more than one 15A receptacle on a 20A circuit, but that's a special case in the code (and a very commonly used one at that).
I read the various posts to mean there's a 30A "main" breaker upstream feeding more than one box but with each of the boxes having a 20A GFCI breaker for the 4 local receptacles.
