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Advice on using a digital multimeter to test whether the circuit behind this light switch is truly dead. : r/DIYUK
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electrical - How do I check continuity without having a multimeter to see which white wire is my hot? - Home Improvement Stack Exchange
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electrical - How can I test a three-way switch to determine if it's working? - Home Improvement Stack Exchange
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electrical - How can I test a three-way switch to determine if it's working? - Home Improvement Stack Exchange
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