I have just purchased a set of lightbulbs that I would like to suspend on my rooftop balcony. Unfortunately, they do not come with a remote, so to turn them on/off I will need to plug-in/disconnect the plug to an extension cord. Do I need to worry about rain damaging either the male or female parts of the plug/extension if they are left disconnected on the ground and then it rains? Will that damage either part? If so, how is this thing usually handled to mitigate damage?


Safe? Well anything plugged in outside is going to a GFCI protected outlet right? So that should provide some safety when everything is wet. The open female ends might trip said GFCI if they get really wet, so it would be good to cover those up or just turn off the circuit when rain is expected.

The other issue is corrosion and... spiders. Most of the metal that plugs are made from will corrode over time when they get wet. You will start to get poor connections which can lead to sparking inside the plugs which leads to even worse connections, etc. The other issue is tiny spiders and other bugs getting inside the plugs and making them dirty on top of the corrosion.

They make small water resistant cases for extension cord connections. They pop up at home stores during the holidays (for outside light strings), but some places carry them year round. Keeping a case on the female end will help. Using some anti corrosion spray and cleaning the contacts regularly will also help.

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  • Sandwich baggies and rubberbands? – peinal Sep 17 '19 at 18:19
  • @peinal, I guess it depends on how classy this rooftop balcony is, but sure. Note that the typical sandwich bag doesn't have any UV protection so they get weak and brittle pretty quickly on a rooftop. Actually, just remove the bags after the rain or they will hold more moisture in. – JPhi1618 Sep 17 '19 at 18:21
  • Agreed. I assume this is just for some temporary needs. Otherwise, it is a terrible suggestion. ;) – peinal Sep 17 '19 at 18:36

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