Mildly OT: NEMA plug guide for dummies

Berkman, Scott Scott.Berkman at
Tue Mar 28 17:00:45 UTC 2006

	How's that?


Scott Berkman CCNP
Network Engineer
scott.berkman at 

-----Original Message-----
From: owner-nanog at [mailto:owner-nanog at] On Behalf Of
Olsen, Jason
Sent: Tuesday, March 28, 2006 11:46 AM
To: nanog at
Subject: Mildly OT: NEMA plug guide for dummies

So I have a large amount of 802.3af gear going out to sites for new
installs and upgrades, which means a lot of new electrical service is
being pulled into closets.  Despite my best efforts it seems the
standard IT-Facilities miscommunications are occuring with the building
folks at these sites, the wiring is being done wrong and I'm left to
clean up the mess.  What's vexed me the most about this is that many of
our "remote hands" have no electrical experience at all so they're
completely unable to determine the types of plugs and receptacles
they're dealing with.  I'm left with descriptions that are, I kid you
not, as helpful as "the twisty plug with the bent part."  If somebody
can't tell me if the receptacle is L6-15 or L5-15 I'm going to have a
very difficult time sorting this all out and getting the appropriate
wiring (re)done.

So I'm wondering, has anybody found a good online resource (or a printed
resource I can go pick up somewhere) that has illustrations of the
different plugs and receptacles found in the wild?  It would help me
greatly if I could just point somebody to a PDF online somewhere and say
"Go to this website, find the receptacle that looks like what has been
installed in your switch closet and read the number back to me."  I
found one at and while it'll do in a pinch, it's sorta
low-quality and I'd like something better.

Off-list replies welcomed.


Jason "Feren" Olsen      Senior Network Engineer     DeVry, Inc
Em: jolsen at     Ph: 630-645-1607            One Tower Lane
INOC-DBA: 19258*526      Fx: 630-389-2929            Oakbrook Terrace,
IL 60181

More information about the NANOG mailing list