Water "Proofing" 30 amp Connections
Here in Ontario runs to the campsite power post can be quite long, 100' or more not being unusual at all, so using extension cables are a way of life ... to solve this I long ago built a set of custom...
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For some reason I have always been concerned about rain water in the connection. I have a short dog bone connector with 30amp male and 50amp female to hook to the RV. Lots of state parks use 30amp so my connector hangs in the air. To preclude rain water running into the side of the connection, I nearly always wrap shrink plastic from a roll around so the layers overlap, like roof shingles. I did not know rain water was a poor conductor.
