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Discussion Starter #1
I discovered when clearing the flying squirrels out the attic that some Romex cable has been chewed. Likely it's been that way for a while. I don't have the electrical skills to perform a repair to code. Would it be unsafe to make a temporary repair by shutting off the power, and wrapping the damaged section with electrical tape?
 

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Best to use junction boxes and cut the bad part out. Not that hard of a job, easy to do. It looks to chewed up to just use electrical tape imo. Just a suggestion.


Going forward use bx cable next time you upgrade or the same thing will keep on happening. Rodents love chewing romex.
 

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Discussion Starter #3
Thanks for your reply. Can you explain to an electrical novice why the tape is a bad idea, even if temporary?
 

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Naildriver
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You have lost the outer coating of the wires, which make it a "cable", and electrical tape can't replicate the original properties of the coating. Thus the suggestion to buy two junction boxes, with hickeys inside, and cover plates, and a length of 12-2 wg nmg (yellow) cable, and either bcaps or push connectors to make the repairs, fastening the boxes to the tops of the joists.

https://www.homedepot.com/p/Steel-C...ith-Armored-Cable-Clamps-54151A-25R/202591774

https://www.homedepot.com/p/RACO-4-in-Octagon-Flat-Cover-with-1-2-in-Knockout-724/202056189

https://www.homedepot.com/p/Buchanan-B-Cap-Wire-Connectors-B1-Yellow-250-Per-Jar-B1-250JR/202275950

https://www.homedepot.com/p/22-12-AWG-2-Wire-Push-In-Connector-Yellow-100-Pack-PIWC-2-C/306353270

You can buy smaller quantities as needed
 

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Naildriver
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The hickeys hold the cables once they enter the box. It keeps from having to install strain reliefs.
 

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The problem with taping it, as opposed to replacing the damaged cable section, is the tape won't be as resistant to abuse and heat as the original cable insulation and sheathing. Simply taping something like this is how electrical fires happen. Don't do it.

Electricians: If he's using metal boxes for this, don't they have to be grounded? I've always understood that whenever metal boxes were used they had to be.

For the connectors inside the boxes, I've taken a shine to these: Wago splicing connectors

I learned about those Wago connectors here on DIYCR :)
 

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To the op, forget the hickey and strain relief stuff. Go to Nd and buy a couple of metal 4x4 boxes with covers and spend two bucks on a pack of non-metallic cable connectors for them. Then as suggested cut out the bad stuff, run each of the leftover good ends into separate boxes and fasten with the cablE clamps. Then cut the correct length of #12 wire and put one end in each box and fasten with cable clamps. Wire nut the correct wires together in each box and put the lids on. Done.
 

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The only place in the NEC strain relief is mentioned is in flexible cords. How much strain can Romex have if it's stapled within 12 in. of the box. The strain reliefs I'm familiar with are like the Chinese finger type.
 

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The only place in the NEC strain relief is mentioned is in flexible cords. How much strain can Romex have if it's stapled within 12 in. of the box. The strain reliefs I'm familiar with are like the Chinese finger type.

2 screw connectors are allowed to be used as strain relief, and can be used with NM (Romex) or cord. They're commonly used for pendant "drop" cords.
 
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