5 ms·
GFCI requirements will interfere with the legality of many modern-day multi-wire branch circuit plans, yeah?
by oasisbob 2y ago
GFCI requirements will interfere with the legality of many modern-day multi-wire branch circuit plans, yeah?
- amluto 2y agoYou can get a two-pole GFCI breaker for this purpose. The prices are a bit silly.
- bombela 2y agotwo poles breakers, 2×120V@20A, $USD: - $20 - GFCI, $115 - GFCI + AFCI, $115 Yes it is expensive, but it can also save your life.
- amluto 2y agoMany things can save your life. Most of them don’t have a UL-provided monopoly making it quite unpleasant for anyone to compete to produce the version that fits where you need it. A 1-pole GFCI breaker, a 2-pole GFCI breaker, and an ordinary GFCI outlet all have the same clever pair of coils, the same IC, and rather similar trip mechanisms. Yet the costs are quite different, and the costs get _really_ absurd if you want a breaker that trips at a level other than ~5mA. And yes, they’re all very much worth using. I do wish that electrical codes would at least start encouraging the use of GFCIs for 240V outlets, which might encourage manufacturers to start making them, and those would actually be able to compete with each other.