Induction

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de100fuegos

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New Jersey
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Electrical Contractor
Good morning
I have a question,Its possible that four NM cables (Romex)that cross a 2x4 in a new construction create induction between them ?
 
Capacitive coupling will be proportional to the length that the cables run in parallel without twisting, and will be lower for an MWBC than from a single circuit, but either way only measurable with a high impedance meter as a phantom voltage. High frequency noise riding on the 120 will couple better.
Magnetic induction will be proportional to the current in the wires, but for a cable where the current returns in the same cable as it goes out it will also be negligible.
 
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