NM cable termination

[johnsage]

What is unsafe about installing more than two NM cables per connecter?

 

[bphgravity]

Re: NM cable termination

Nothing, if the connector is listed for use with more than one cable. If the connector is not listed for more than one cable, then it has not been tested by a recognized testing laboratory to determine if more than one cable is can be used.

So in short, it cannot be determined whether or not more than one cable in a connector that is not listed for more than one cable presents a hazard, and that is not a liability an installer should place onto themselves.

 

[midget]

Re: NM cable termination

I was just told one cable per romex clamp...but I thought some people did two or something, depending on the clamp...is the information for the clamps on the box to tell you if it's OK or not?

 

[physis]

Re: NM cable termination

I wonder where you're supposed to find listings and manufacturer specs sometimes. There not always around just waiting to be read. They must be somewhere.

 

[johnsage]

Re: NM cable termination

Thanks for the posts.

 

[George Stolz]

Re: NM cable termination

Originally posted by midget:
I was just told one cable per romex clamp...but I thought some people did two or something, depending on the clamp...is the information for the clamps on the box to tell you if it's OK or not?

RCR-50's, non-metallic NM connectors, state right on the box how many will fit, right under the title.

 

[midget]

Re: NM cable termination

Cool...I thought they were on the box, but I've never seen an actual box of them...we just pulled them outta big bins at school.

 

[heco]

Re: NM cable termination

Cable connercts are limited to the number of conductors in accordance withe the "UL" listing...marked on the box or bag and forund in the UL White book...

 

[charlie]

Re: NM cable termination

and found in the UL White book

That is not quite true. The UL White Book will tell you in NONMETALLIC-SHEATHED CABLE CONNECTORS (PXJV), "Except for duplex connectors or when otherwise marked on the carton to indicate connecting of more than one cable or cord, the connectors covered under this category have been investigated for connecting one cable or cord only."