: > Will this hurt if put in a metal outlet to make it water
: > temprarely for a Christmas light extension cord?
: If there is a short or partial short, the heat will not escape
as easily and
: you are that much more likely to reach ignition temp.
Furthermore, if a
: fire does start, you have filled the electrical box with fuel
to get it
: going better. Expanding foam is not a rated electrical
: performance at preventing electrical leakage is unknown.
: What is a metal outlet? Do you mean a cord with a metal J-box
: the end with a couple of receptacles installed. Probably OK
"as is" if not
: submerged and properly assembled (grounded) but it's not the
: just buy a real cord instead. #14 gague light duty should be
Even better, add a plug-in GFI; I use them on our lights. I use
elecrical tape to seal the plug/receptacles outdoors & don't let
them lay directly on the ground. .