You are much safer to use grounded extension cords. This is the best,
even though your lights themselves do not use the true ground from the
outlit.

I would suggest to clean off all the cords, so that they are dry.
This means unstringing them and bringing them in to clean and dry out.
After they are dry, you can put them back together. Wrap the joints
with several layers of plastic bags, like the ones that you get with
your shopping order. On the edges, wrap a few turns of electrical
tape to seal them, so moisture cannot get in where the joints are.

This way of insulating the connecton points, will prevent water from
getting in. You should not have any ground fault problems this way.

Jerry Greenberg
http://www.zoom-one.com

--


"Chris Cooper" wrote in message ...
So I thought I would be extra-safe this year, and plugged my outdoor Xmas
lights into some GFCI-protected outlets. All was well until the snow came
(6") and now somewhere in the system (I've probably got 30 different
extension cords out there) is a leak that the GFCI is "protecting" me
against.

I can certainly see how snow could potentially produce enough conductivity
to generate the small amount of ground current that GFCI's are designed to
sense.

I am planning (by next Xmas) to run some underground conduit and have some
outlets "popping up" at various places in the yard, so I don't have to be
running extension cords quite so far. My question is, should I _not_ use
GFCI outlets in the yard? Will I encounter this problem every time there is
snow?

Should I make sure to _not_ use grounded cords for this? I mean, none of
the Xmas lights have ground connections, so they only thing the ground
connection is doing, is providing a means for the GFCI to complain?

Thanks!
Chris