Chosen Solution
shed light switch suddenly stops working, have changed it twice. power to switch and lights work if bypassed. what is causing switch failure? Not used often
Since it is located in a shed it isn’t in a controlled environment like inside a house. Humidity and such play large factors. I would recommend an enclosure like this: https://www.homedepot.com/p/Greenfield-W… I’ve installed them before, they’re very easy, and your switches should last longer since they’ll be more protected. Also, check and sure nothing has been leaking in/on the switch or electrical box.
