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For cable not in conduit and intended to be installed without conduit, such as NM cable, yes. You must provide some form of connector that will hold the cable in place. A clamp is not the only kind of connector that will do this but is the most common.

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โˆ™ 2012-09-10 23:10:11
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Q: Do electrical wire cables have to be clamped with cable connectors when they enter electrical panel box?
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