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Joined: Oct 2000
Posts: 2,749
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Question: When using wirenuts to make joints, is it necessary to twist the conductors together before applying the wire nuts, and is it necessary to use insulating tape over the wirenuts?


Joe Tedesco, NEC Consultant
2017 / 2014 NEC & Related Books and Study Guides
Joined: Jan 2003
Posts: 4,391
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No & No [Linked Image]


Bob Badger
Construction & Maintenance Electrician
Massachusetts
Joined: Jul 2002
Posts: 680
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I've seen equipment manufacturers instructions that state you must twist conductors before using the supplied wire nuts. But from the instructions I've read on wire nut packages you don't have to, although when done they want 3 twists outside the nut.

Joined: Jan 2002
Posts: 1,457
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Sounds like a trick question but I'll say no and no.

Joined: Nov 2003
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What I want to know is how many more times are we going to discuss this?


John
Joined: Apr 2001
Posts: 449
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It depends on whether I'm installing the receptacle with the ground pin up or down.

Joined: Jun 2003
Posts: 681
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I will answer by saying it depends on the manufacturer's instructions. As I have seen instructions that say "pretwisting not required" and "twisting of conductors required".
I am going to try and locate the one package that requires twisting.

I have never seen the requirement of taping a wirenut.

Pierre


Pierre Belarge
Joined: Jan 2005
Posts: 5
K
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You must twist the bare conductors otherwise the solder doesn't stick...

Joined: Jun 2002
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mj Offline
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as commom practice, I always twist the wires before installing the wirenut, and I always uue tape... just as a safety .

Joined: Jan 2002
Posts: 1,457
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MJ what is unsafe about not twisting or using tape?

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