Splices

[jeff43222]

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?

 

[al hildenbrand]

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.

 

[benaround]

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

 

[steved]

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).

 

[redfish]

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?).

 

[jwelectric]

Re: Splices

In the 2005 cycle see the following
545.13, 550.15 (K), 551.47 (O), 552.48 (N), and 690.32