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Old 11-12-2012, 06:27 PM   #1
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$-way switch wiring


I have a 4-way switch circuit with source power coming in to box1 and going out again.
With power disconnected from box 1, I still measure voltage between ground and red and also between ground and black on the wires between box 1 and 2. About 14 and 20 volts.
Where is this voltage coming from?

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Old 11-12-2012, 06:37 PM   #2
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$-way switch wiring


Induced voltage from somewhere downstream of box 2??

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Old 11-12-2012, 07:02 PM   #3
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$-way switch wiring


You are using a digital meter and the voltages are phantom voltage induced by capacitive coupling.
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