splices in walls

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hansbronson

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what is the correct way or nec way to properly make splices in walls where there is no way to get back to the splice except by cutting the sheetrock. I have been using a UF splice kit that has 1 short heat shrink to cover the splice and a long heat shrink to cover the previous shrink. We have some plastic romex tap kits that are approved for in walls but the UF splice kits in my opionion are a better connection than the tap kit.
 

jwjrw

Senior Member
Any splices must be accessible. Ive seen the circuits pulled to crawl or an attic and put in a jbox and ive seen cutin boxes used in the wall if you have enough slack to get the wires in..
 
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augie47

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Location
Tennessee
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State Electrical Inspector (Retired)

augie47

Moderator
Staff member
Location
Tennessee
Occupation
State Electrical Inspector (Retired)
No. I'm not saying that at all. I read the reference thread, but it appears it has limited use. 480sparky posted an interesting link, but when all was said and done I remained unsure as to it's legal use. It looked as if he had knowledge of the product which I don't.
 

K8MHZ

Senior Member
Location
Michigan. It's a beautiful peninsula, I've looked
Occupation
Electrician
what is the correct way or nec way to properly make splices in walls where there is no way to get back to the splice except by cutting the sheetrock. I have been using a UF splice kit that has 1 short heat shrink to cover the splice and a long heat shrink to cover the previous shrink. We have some plastic romex tap kits that are approved for in walls but the UF splice kits in my opionion are a better connection than the tap kit.

Has an inspector ever seen you do this?
 

480sparky

Senior Member
Location
Iowegia
No. I'm not saying that at all. I read the reference thread, but it appears it has limited use. 480sparky posted an interesting link, but when all was said and done I remained unsure as to it's legal use. It looked as if he had knowledge of the product which I don't.

IMPO, the Tyco connectors are only legal in manufactured / mobile homes. From that literature in the link comes the wording; "....for use in manufactured buildings.. mobile homes, manufactured homes, mobile home parks... and recreational vehicles..."
 

OregonSE

Member
Location
Oregon
what is the correct way or nec way to properly make splices in walls where there is no way to get back to the splice except by cutting the sheetrock. I have been using a UF splice kit that has 1 short heat shrink to cover the splice and a long heat shrink to cover the previous shrink. We have some plastic romex tap kits that are approved for in walls but the UF splice kits in my opionion are a better connection than the tap kit.

Are you serious?
 

al hildenbrand

Senior Member
Location
Minnesota
Occupation
Electrical Contractor, Electrical Consultant, Electrical Engineer
Read the next paragraph. The T-tap is permitted in exposed wiring and existing construction as per 336.21.
Again, that Tyco PDF file is referencing the 1999 NEC.

The 2002 NEC moved this language, without language change, to 334.40(B), and there it has stayed thru 2005 and 2008:
334.40 Boxes and Fittings.
.
.
(B) Devices of Insulating Material. Switch, outlet, and tap devices of insulating material shall be permitted to be used without boxes in exposed cable wiring and for rewiring in existing buildings where the cable is concealed and fished. Openings in such devices shall form a close fit around the outer covering of the cable, and the device shall fully enclose the part of the cable from which any part of the covering has been removed. Where connections to conductors are by binding-screw terminals, there shall be available as many terminals as conductors.
 

480sparky

Senior Member
Location
Iowegia
Again, that Tyco PDF file is referencing the 1999 NEC.

The 2002 NEC moved this language, without language change, to 334.40(B), and there it has stayed thru 2005 and 2008:

"....rewiring in existing buildings where the cable is concealed and fished...."

This is not a cable. It is a connector.
 

al hildenbrand

Senior Member
Location
Minnesota
Occupation
Electrical Contractor, Electrical Consultant, Electrical Engineer
"....rewiring in existing buildings where the cable is concealed and fished...."

This is not a cable. It is a connector.
Yes, it is a connector that is designed to fit to the cable sheath and contain multiple connections. . . a tap of an existing cable to another cable . . . a tap device which is included in 334.40(B)
 

al hildenbrand

Senior Member
Location
Minnesota
Occupation
Electrical Contractor, Electrical Consultant, Electrical Engineer
Consider this:

An existing dwelling with a wall sconce. The homeowner wants the sconce some feet away from the existing, as built, location.

I am now going to rewire the existing installation by removing the existing lighting outlet box and use a NM Tap Device made of insulating material to connect a new NM cable to the existing cable, and then, I am going to artfully fish the new NM cable to the new sconce location and cut in a new lighting outlet in the existing wall surface.

Seems that the key word here is rewire. This clearly encompasses the existing wiring that is not fished and allows the alteration by fishing.

Afterwards, the wall at the original sconce location is closed, without a box, burying the NM Tap Device.
 
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