How to determine the right size wire nut?

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  #1  
Old 07-09-07, 09:14 PM
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How to determine the right size wire nut?

I'm wondering how one goes about determining the right size wire nut for a particular purpose?

For instance, I need to connect two solid #14 wires with a single stranded #18.

I have some yellow ones (that say 2 #18 - 3 #12 AWG) that seem like they hold, but that's just guesswork.

Most of the sizing charts I could find on the internet only listed homogeneous configurations.
 
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Old 07-09-07, 09:45 PM
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Well, [two #14 plus one #18] would be larger than [two #18] and smaller than [three #12] so it looks like the package clearly says it is appropriate for your application.

Also, experience says it is also.
 
  #3  
Old 07-09-07, 10:22 PM
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The package description gives the minimum and maximum ranges. In your case the minimum is two #18 conductors and the maximum is three #12 wires. Anything in between those extremes is okay.
 
  #4  
Old 07-10-07, 08:15 AM
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Some of the wirenut jugs will have all of the possible combinations printed in tiny font on the label. Ideal publishes them here:

http://www.idealindustries.com/pdf/UL%20Listed%20Wire%20Combinations.pdf
 
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