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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: Mildly OT: NEMA plug guide for dummies
{I'm no electrician, so this is all 'as I learned it'....}
A) In the US, the breaker is rated to protect the outlet:
20A outlet, 20A breaker, etc.
B) Each plug/jack set is unique; this stops you from accidently
putting 250 on the 125 power supply. But it also stops you from
using a 20A plug in a 30A receptacle...
C) Big exception: you can use 5-15R aka 15 amp receptacles
on 20A circuits. Further, the 5-20 receptacles accept either
5-15 or 5-20 plugs.
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