Like Joseph and others said......the newly installed outlet MUST BE
grounded.........it's an outdoor outlet and must be grounded per NEC Section
The NEC permission to replace _existing_ 2 wire outlets that are not grounded
with a 3 wire GFCI outlet should not be confused with the requirements for
nonmetallic extensions (NEC 382) in this case. NEC Article 382 specifically
does NOT permit nonmetallic extensions to be made to outdoor outlets.
Thanks. My code book NEC 1999 does not have the article 382. Is this new in
the 2002 code? It is important to note that your local area may not require
the latest code. A city where I used to live only recently adopted 1999
codes.The city where I live now is still using the NEC 1984 code and similar
vintage for building and plumbing codes. It doesn't hurt to use the latest
Sorry about the incorrect information on the GFI needing a ground to
function. Outdoor outlets are much safer if they are grounded as much
equipment that is connected to these outlets normally uses the third
ground conductor for your protection. It is possible that your existing
outlets are grounded if the wires are run through metal conduit and the
outlets mounted in metal outlet boxes. If not then you most certainly
have no ground and the best solution would be to run a new wire back to
the breaker box.
The NEC allows grounding to any verified ground source when retrofitting
two-wire systems. That's not to say that it's a good idea, but it's better
than nothing. Best to pull a wire back to the service ground. There's also
a rule about the type of enclosure for outside outlets. They must be
completely covered...even in use. The old style plug covers, which covered
the outlet only when unused, are no longer acceptable. The new ones have a
large shield or door which covers the entire shebang, with slots underneath
to allow passage of cables.
The old ones would allow water to wick up--or dribble into--the outlet
itself when a cord was plugged in...only protected well when unused.
On Sat, 23 Aug 2003 14:37:20 -0700, Ralph Farr wrote
No worries, Mate!
It turns out that the rooms where I was adding the outdoor outlet did have a
3-wire circuit. This extension of the house is newer than the original house,
which has only 2-wire circuits.
So, the ground issue is a non-issue.
But I learned much about GFCI and grounding requirements thanks to all who
I'd recommend retrofitting GFCI outlets at the beginning of all of
your outlet circuits, grounded or not. The only exception would be
for circuits where a nuisance trip might drop power to a fridge.
A GFCI saved my butt. I had reached behind the fridge to shoo our
pet rabbit out and hit the power cord she'd been chewing. I was
standing on concrete barefoot. Everything went black for a split
second and I heard the GFCI pop on the other side of the room. My arm
was aching for about an hour.
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