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Converting attic space in ranch home - what to do with wires

wcp0611

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Nov 25, 2014
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Rockvale, TN
I'm converting our attic space over our ranch home to living space in the coming weeks. Its not too much work besides adding more joists and subflooring it all. In years prior, we did a few remodels where some rewiring had to be done in the attic from room to room. This caused a bunch of junction boxes up there that are just nailed to the current ceiling joists. What is the code or what is the procedure for those if I close in the floor up there? Its going to be a lot of work if I have to run all new wiring to do away with the junction boxes but I read somewhere that junction boxes cannot be buried. Just looking for ideas.
 
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wyliesdiesels

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Modesto, CA
as said above, splices have to be in an accessible junction box that doesnt require removing of finishes etc.

so if you have junction boxes in the floor your options are to not cover them with flooring or run new wire.
 

walta

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Dutzow Missouri
I did see this splice

“They are designed and approved for use in rework within existing structures. Splice and Tap Kits also eliminate wire nuts for installation and replace the conventional method for adding a splice or tap for non-metallic cable without the need for exposed and unsightly junction boxes. NEC approved Article 334-40b.”


Walta
 
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dave*99

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Coastal NJ
I did see this splice

“They are designed and approved for use in rework within existing structures. Splice and Tap Kits also eliminate wire nuts for installation and replace the conventional method for adding a splice or tap for non-metallic cable without the need for exposed and unsightly junction boxes. NEC approved Article 334-40b.”


Walta
I've seen several references indicating this product has been discontinued by the manufacturer. There may be some available on eBay.
 

nadogail

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Coronado, CA
I've seen several references indicating this product has been discontinued by the manufacturer. There may be some available on eBay.
Perhaps the manufacturer became informed about their possible liability if their products were found to be “noncompliant”
 
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larry4406

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Jan 27, 2006
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Northern Virginia
Your attic conversion won’t go all the way to the eaves.

Typically there are knee walls around 4-5’ tall before slope ceiling begins.

Put your junctions in the knee space accessible via an access panel.

Or put your junctions on the back wall of a closet and blanked off.
 

dscheidt

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Apr 26, 2017
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2,893
I did see this splice

“They are designed and approved for use in rework within existing structures. Splice and Tap Kits also eliminate wire nuts for installation and replace the conventional method for adding a splice or tap for non-metallic cable without the need for exposed and unsightly junction boxes. NEC approved Article 334-40b.”


Walta

The allowed uses of those by recent code is very narrow, and they're very hard to find for retail sale. Since the 14 cycle, they're only approved for repair, not for extension. That means you can use them to fix a wire hit by a nail, but not so you can add a new outlet. you can use them for extension and rework where the wire is allowed be exposed, but if you convert the space to a use where they require concealment, you have to remove them. But even in earlier cycles, where they were allowed for modification, they were required to be fished, and you don't have ceilings yet, so they'd be not allowed.
 

whateg01

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Mar 13, 2006
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doo dah, kansas, usa
Your attic conversion won’t go all the way to the eaves.

Typically there are knee walls around 4-5’ tall before slope ceiling begins.

Put your junctions in the knee space accessible via an access panel.

Or put your junctions on the back wall of a closet and blanked off.
That's all going to require rewiring, which op is trying to avoid. At least that's how I read it. You usually/often can't move an existing junction box without stretching (extending) some wires, which is going to require a junction box where the original one was. Yeah, that doesn't make a lot of sense, does it?
 

wyliesdiesels

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Modesto, CA
Your attic conversion won’t go all the way to the eaves.

Typically there are knee walls around 4-5’ tall before slope ceiling begins.

Put your junctions in the knee space accessible via an access panel.

Or put your junctions on the back wall of a closet and blanked off.
how will that remove junction boxes/splices from the floor?
 
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