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Old 10-11-2015, 09:00 PM   #1
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NM splice connectors


Anyone have issues with using these? I saw them in the box store and thought it could replace a junction box and/or repair a damaged cable. Any code issues? Thanks for a great site for learning!
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Old 10-11-2015, 09:28 PM   #2
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Not sure about those connectors. But no you can not use them.

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Old 10-11-2015, 09:44 PM   #3
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Actually, you can use them... but I have heard negative things about them. I have never used one personally.
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Old 10-11-2015, 09:53 PM   #4
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Wait, you mean to tell me all those illegal knob and tube connections without junction boxes were legal?
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Old 10-11-2015, 09:58 PM   #5
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Junction boxes were not used with knob and tube. Western Union splices were used. They were soldered and taped.

Can you cite why you think those splice taps cannot be used?
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Old 10-11-2015, 09:59 PM   #6
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Knob & tube connections were legal without junction boxes when they were new, but not new wiring spliced to K&T.

At any rate, that splicing device has been tested and listed for the purpose of connecting two cables together without a box, so it is legal.
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Old 10-12-2015, 09:42 PM   #7
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Quote:
Originally Posted by tndiyguy View Post
Anyone have issues with using these? I saw them in the box store and thought it could replace a junction box and/or repair a damaged cable. Any code issues? Thanks for a great site for learning!
I have seen them in the supply house but refuse to use it. Look up the article number that is shown on the package. According to the labeling it is only approved for the 2005 and 2008 codes. The current code is 2014.
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Old 10-12-2015, 10:26 PM   #8
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I've never seen one in the field. There might be restrictions with them that make their application all but useless. I'm wondering if they're allowed in thermal insulation.
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Old 10-12-2015, 10:33 PM   #9
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I thought splice connectors were illegal because anytime someone tries and splice knob and tube everyone claims you have to run a new circuit. I can tell you their are a lot of people splicing knob and tube and burying it inside walls here.
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Old 10-12-2015, 10:51 PM   #10
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The issue with knob and tube is it is not grounded .
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Old 10-13-2015, 12:29 AM   #11
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use them where? a junction cant be inaccessible, so where does this item go, inside a jbox?
334.40b seems to allow this, very odd. so basically a concealed junction, but nec restrictions on "ul listed and only used per instructions", what exactly do these instructions say??


are mobile homes in abundance there? the Tyco instructions say:

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The nonmetallic sheathed cable interconnection devices are Underwriters Laboratories Inc. (UL) Listed to U.S. and Canadian safety standards under UL File E57250 for use in manufactured buildings in accordance with 1999 National Electrical Code (NEC) Article 545-13 (Component Interconnections); mobile homes, manufactured homes, and mobile home parks NEC Article 550-10(k) (Wiring Methods and Materials and Component Interconnections); and recreational vehicles and recreational vehicle parks NEC Article 551-47(o) (Wiring Methods and Component Interconnections).

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Old 10-13-2015, 07:02 AM   #12
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Concrete Joe, those connectors and the Ideal ones, same as those used in mfg housing, are allowable to be placed behind the finished wall, without being inside a secondary junction box. That is because NFPA & UL considers the device a Junction box under the standards that the mfg wrote up per their testing with them.
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Old 10-13-2015, 07:14 AM   #13
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Originally Posted by mj12 View Post
I thought splice connectors were illegal because anytime someone tries and splice knob and tube everyone claims you have to run a new circuit. I can tell you their are a lot of people splicing knob and tube and burying it inside walls here.
This thing doesn't splice knob & tube. It splices romex.
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Old 10-13-2015, 07:17 AM   #14
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They work fine. Just installed one this weekend. They are listed for 12-2 and 14-2, and cannot be used on old NM with the undersized ground.
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Old 10-13-2015, 08:00 AM   #15
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They work fine. Just installed one this weekend. They are listed for 12-2 and 14-2, and cannot be used on old NM with the undersized ground.
I grabbed a box of them, when I grabbed the Ideal #12-14 connectors at the electrical warehouse down the road from my house, when I had my house resided. They come in really handy when you cannot get enough wiring from a junction box for the 6", because someone down the road in the past, decided to only leave you 3-4" inside the junction box.

The even better thing is that they save your fingers, when dealing with #10 & Wire Nuts.

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