this post was submitted on 16 Jun 2025
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[–] Rivalarrival 1 points 1 day ago (1 children)

Can you cite a time stamp? I don't want to watch a 30 minute video.

I'm very curious where "42 amps max" comes from, as NEMA outlets are rated for 15A, 20A, 30A, 50A, or 60A. 42A is a rather oddball number; I'd like some context for it.

Most dryer outlets are rated for 30A, NEMA 10-30, or 14-30.

[–] kuberoot@discuss.tchncs.de 3 points 1 day ago

Not the same person and cba to get a timestamp right now, but it's the 80% rule - the electrical stuff isn't designed to deliver the rated amperage continuously for hours on end, so for car charging, you're apparently supposed to limit it to 80%. Now, 80% of 50 isn't 42 but 40, so not sure if it's a case of 80% not being a precise number or a mistake here, but it roughly checks out.