On Mon, 24 Dec 2012 08:26:19 -0500, "Stormin Mormon"
Come on now......
Metal boxes have been used for electrical stuff for ages as well as
metal cover plates on sheds, garages, industrial, etc. That's what the
ground wires are for, and I'm sure the cover is connected to ground
somehow, knowing how the NEC operates. Even switches have ground screws
now, and I really dont know what good they do.
Not to mention that many outdoor boxes are still metal, unlike those
blue plastic boxes they use indoors for almost all new wiring now.
There are different plastics used. 10 years is what I've gotten out of my
Polycarbonate (Lexan) "bubble covers" They've yellowed a bit, but the
strength remains fine. Polycarbonate is what's used for street light
That's not bad at all. But it depends on how extreme your weather is.
In my part of the country, the winters are brutal, and last summer
proved to test everyone's extremes with heat.
Is that the same plastic used for some car headlights too? That stuff
seems to hold up well, but gets foggy, causing the light output to
dininish after years.
Yes. Polycarbonate is a tough plastic. You can pound it with a sledge
hammer and it won't break; but it does yellow due to UV exposure over time.
There are UV-stabilized versions that will slow down the process and, for
headlight lenses, kits that will renew the surface.
On Sun, 23 Dec 2012 10:46:51 -0500, "John Grabowski"
Ok. so they do make them... Thanks
This is just the common flat cover. It's only used in winter, so the
door on the cover is open, but in the warm weather the cover is closed,
which is when rain could get in. I suspect that water gets under that
door on the cover and gets in around those push buttons on the GFI.
That's all I can think.
Maybe for this application, I will buy a GFI breaker, or as I mentioned
earlier, just use a portable cord type GFI. Having to keep replacing
them is costly and a big pain in the ass during the winter, which is the
only time I use this particular outlet.
For about 10 years, I've had several GFCI-protected outlets in my yard and
on the outside of my house. Only one has failed. They're mounted in
standard boxes (the ones in the yard are weatherproof boxes on a ground
stake). But instead of a cover plate, there's a sturdybox (clear
polycarbonate) with a hinged cover to protect the plug and GFCI from snow
and rain. All outlets are used fairly often for yard tools, holiday lights,
gutter heaters, etc. so I don't see that outdoor use causes failures. And,
I agree with the other posters. You have to have the power on to test or
reset the GFCI.
Had an idustrial situation where no matter what we did with silicone
etc, it would get water in the box and eventually something would arc
Left a bolt out of the bottom of the box and had no more trouble
because instead of th water steaming into every nook and cranny, it
just drained out the bottom.
Sounds like condensation - it's often a good idea to have a tiny hole in
the lowest point of conduit runs or fittings.
 Tiny enough so it is not a hazard and also not to allow all and sundry
from the bug world in. However, not so advisable if the fitting is likely to
be subject to strong jets of water, eg hoses or pressure washers.
Tim Watts Personal Blog: http://www.dionic.net/tim /
"A fanatic is one who can't change his mind and won't change the subject."
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