[89628] in North American Network Operators' Group
Re: Mildly OT: NEMA plug guide for dummies
daemon@ATHENA.MIT.EDU (David Lesher)
Tue Mar 28 23:57:17 2006
X-Original-To: wb8foz@panix.com
From: David Lesher <wb8foz@nrk.com>
To: nanog@merit.edu (nanog list)
Date: Wed, 29 Mar 2006 00:03:02 -0500 (EST)
In-Reply-To: <0E5D8B541B3B3C4F9ADA1B0808E1ECE702D6FDE2@obt-w-exchbe2p> from "Olsen, Jason" at Mar 28, 2006 10:45:33 AM
Reply-To: wb8foz@nrk.com
Errors-To: owner-nanog@merit.edu
{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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