re: Light fixture not coming on

quote:

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Turns out it was just a loose connection with the ground wire.
Very strange that happened to one of the two fixtures after being installed three years ago!

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Glad you fixed it.

Chances are the wires weren't terminated correctly. It is easy to pack wires back into a fixture with enough tension on one of the wires that it slowly pulls its way out of the nut if not properly twisted past the nut.



The problem is magnified terminating to a light fixture because almost all of them I have seen use stranded wire which can't be reliably twisted past the nut around the solid wire coming out of the wall or ceiling. Solid to-stranded connections should always be taped so the nut is attached by the tape to the insulation of the wires. There is just no other good way to get a physically strong connection between a stranded and solid wire. The alternative over the last few years is using Wago-type connectors.

If you think of a wire nut as JUST an electrical connection/insulation and not a physical one then you are likely not not make a whole bunch of common mistakes.