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ahj3939 t1_j27q5sp wrote

I would recommend a non-contact voltage tester as well as a good understanding of the limitations of these devices.

Telling someone who can't figure out the disconnected wire feeds the lights that are no longer power on to get a multi meter and start proving on live circuits doesn't seem like a great idea.

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Gtp4life t1_j2915pb wrote

While yes electrical safety is important, they already figured out how to swap the light without causing any problems, sticking a voltage probe to the same wires shouldn’t be difficult for them.

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