Is it ok to splice NM and NM-B cable together?

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  #1  
Old 09-10-18, 07:15 AM
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Is it ok to splice NM and NM-B cable together?

I have the NM 12-2 with ground coming from my breaker. I am installing LED recess lights in my kitchen so I will need to use some new NM-B 12-2 with ground cable for that. If I bring my 12-2 NM cable into a junction box and splice it to my new 12-2 NM-B cable that will be going to my lights is that safe? I know they are rated for different temperatures (60 C and 90 C). I have the kitchen walls down so redoing all the wire back to my splice box will simple enough. I just need to know if that NM to NM-B splice in the junction box will be safe.

Thanks for your time!
 
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Old 09-10-18, 07:38 AM
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That is perfectly safe so long as you don't have a device requiring 90C wire (such as a light fixture) at the splice point.
 
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Old 09-10-18, 09:37 AM
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And remember the basics: Junction boxes can not be covered as need to be accessible. Since specifying a metal junction box your ground splice needs to also include the box.
 
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Old 09-11-18, 06:15 AM
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Thanks for the replies. The 3-5 recess lights at the end of the circuit state they need 90 C conductor. That doesn't require 90 C conductor all the way back to the breaker does it?
 
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Old 09-11-18, 10:52 AM
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That doesn't require 90 C conductor all the way back to the breaker does it?
No. Just need it where the light fixture is installed.
 
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