You can protect connections from rain and snow (not moisture) by using
sandwich bags but you need to check them periodically (as they will
deteriorate) and wires from mechanical damage and summer UV (which is
apparently not a problem for your purpose) which makes the extension cord
brittle and the chance of problems is small. I've done this - the original
cord has been replaced because it was there all year round and exposed to
sun. The replacement follows a different route so that it is not covered
for thermal reasons but is also not exposed to sunlight or mechanical
Note that standard outdoor Christmas lights are more questionable than a
good outdoor rated cord and a protected outlet but don't seem to be
considered a problem with regard to code regulations.
Don Kelly email@example.com
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If it's above ground outdoors don't forget the UV rating. SOOJW may be the
If below ground, direct burial wire will be recommended.
Wire size/gage is determined by current and length.
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