split bolt connectors

[jap]

Why are you still using a split bolt in 2016? :huh:

Although Polaris type connectors are convenient, split bolts although antiquated are still a better connector in my opinion.

JAP>

 

[electrofelon]

Split bolts in general, are to code, provided that they are used per their manufacturer's instructions. Used for joining two wires, unless listed and marked otherwise for more. And that they are wrapped in the proper combination of insulating methods, which is not just standard electrical tape.

Which brings up something I have always been unclear on: How do I know what the proper insulation is for a split bolt or other uninsulated connector? I usually use rubber tape, but how much? Is one layer sufficient? Can I just use standard tape? If so how many layers? 110.14(B) doesnt offer much direction.

 

[user 100]

Which brings up something I have always been unclear on: How do I know what the proper insulation is for a split bolt or other uninsulated connector? I usually use rubber tape, but how much? Is one layer sufficient? Can I just use standard tape? If so how many layers? 110.14(B) doesnt offer much direction.

110.14 tells you to get an equivalent to the insulation on the conductors- so to me that implies wrapping the splice w/ enough tape (that is listed for insulating splices) to match the thickness of the insulation on the conductors, as well as matching the temp and max voltage rating of the conductors- Ex.- on a splice that is on a 120v circuit w/ thhn #12 conductors, you could wrap it in 3 layers of 33+ and be good. (the thhn 12 is 15 mil thick, 90c vs. 3 layers of 33 which is 21 mil thick, rated 105c....)

There are other characteristics to be concerned with- i.e, is tape really the physical equivalent ,otherwise,to thhn, xhhw, etc- but worrying about that will lead off into the rabbit hole of differing opinions for sure.:happyyes: