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I need two sizes of wire nuts but I can't find anything that specify the work/wire load that I need.

Plus I wanna swap out my backstab/push in connectors with Wire nuts cause people saying it's not really a recommended way of tying lines together

I'm looking for wire nuts that support

  1. 4x 14 AWG solid copper
  2. 6x 14 AWG solid copper
  • idealindustries.ca/products/wire_termination/twist-on/… between tan and grey they are about the only two you'll ever need, only get Ideal branded and not a cheap imitation. (( by the way you didn't know it when you asked, but this question is both religious and political will likely receive answers passionate answers )) – Tyson Aug 8 '17 at 21:43
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    I prefer 3M twist on wire connectors. – Jim Stewart Aug 8 '17 at 23:28
  • You could also get push-in connectors like these. They come in a variety of sizes, meaning number of ports, and typically accept #20 up to #12 wire. – mmathis Aug 9 '17 at 18:24
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It totally depends on what the manufacturer has listed the wire-nuts for. The manufacturer tells Underwriter's Labs which several dozen size combinations they'd like their twist-connector tested for... and then UL torture-tests each of those combinations, resulting in a UL listing.

And somewhere on the web is a super-boring spreadsheet of each and every single one of the combinations for which that twist-connector is listed.

Those docs can be a bit hard to find on the web, they love to steer you toward the color brochure which armwaves something like 2x#16 to 3x#10 - which doesn't tell you a darned thing. An email to your vendor's support department ought to get you the link.

For instance, Ideal chooses to not list their "red" wire nuts for 6x14AWG. No idea why not. Somebody does. If it's not listed, you can't use it - the end.

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Red, as per this Ideal Industries datasheet.

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  • Reds don't work for 6 splices – RTarson Aug 8 '17 at 21:27
  • I have to respectfully disagree RT. – NPM Aug 8 '17 at 21:32
  • I'm looking at Gardner Bender wire nuts says 3 or 4 #14 – RTarson Aug 8 '17 at 21:33
  • Reds do up to 5 12's, or 6 14's. I guess I can go find a link. One sec... – NPM Aug 8 '17 at 21:35
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    My 35-year-old box of red Scotchloks states 2 to 4 #14 an 2 to 4 #12. In practice I don't use these reds for four #12. I use the Grey Scotchloks for four #12. The color is not an official designation and the capacity of a red color coded twist-on connector varies from manufacturer to manufacturer. 3M now has new dual color connectors. – Jim Stewart Aug 8 '17 at 23:05

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