Splices

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jeff43222

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Location
Minneapolis, Minnesota
I was at the supply house the other day, and one of the counter guys showed me a splicing device that he said could be used in lieu of a box and could be hidden inside a wall. The device is made by Tyco and is called: Nonmetallic (Type NM-1) Sheathed Cable Splicing Device 1116377.

When I looked it up at the company's Website, it mentioned NEC 545, 550, 551, and 336-21 under "Agency Approvals," but those articles deal with manufactured buildings, mobile homes, RVs, etc., which I don't work on. I perused 300.15 and the related articles listed in the FPN in 300.15(E), but I'm still not clear as to whether this device could be buried inside a wall. I've always operated with the idea that splices must be in a box and remain accessible, so my gut tells me I can't use this splicing device if it's going to be covered up at some point.

Anyone have any experience with one of these?
 
Re: Splices

I don't have first hand experience with installing these.

However, after looking at the Specification Sheet PDF I note that the connectors can only be connected once.

The sheet says the units may be concealed, or not.

I also found a Michigan Bureau Of Construction Code Bulletin that, on the left side of page 4, warns about the reuse of the connectors.
 
Re: Splices

Jeff,

Did you read Al's info? If not, these splice connectors are for use only on pre-manafactured homes,rv's, etc.

frank
 
Re: Splices

We use a similar product from Molex in building motorhomes and they have to be accessible. As far as I know, the only place this type of splice can be concealed is in joining together the parts of a manufactured home (NEC 545.13).
 
Re: Splices

Just looking at the pdf, it seems to me that if a good connection was not made, it would create heat.Too chancy(Is that a word?). :)
 
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