[Ramblin Jack]

A have dozens of new metal cable clamps. R they ok to use on a blue plastic junction box??

 

[Arrow3030]

What kind of clamps in what kind of box? Usually plastic boxes have a built in means for nm cable. If you're using a metallic wiring method, plastic boxes are not practical

 

[Ramblin Jack]

Here's a pic

 

[Ramblin Jack]

Picture

 

[Ramblin Jack]

12-2 cable wire

 

[MrElectricianTV]

A have dozens of new metal cable clamps. R they ok to use on a blue plastic junction box??

No. They would need to be grounded. Use metal boxes or plastic button type connectors.

 

[rjniles]

Not a box I would ever use bit if I did I would use the snap in plastic buttons.

 

[psgama]

Nope, can't do that unless you want to go buy a whole bunch of GRLs (Groundable Lock rings) and tag them with your ground wire. all metal parts must be bonded together.

Cheaper option, go buy a bag of the plastic type connectors

 

[gregzoll]

Not a box I would ever use bit if I did I would use the snap in plastic buttons.

I hate those with a passion. I just go with the same route the OP did.

 

[gregzoll]

Nope, can't do that unless you want to go buy a whole bunch of GRLs (Groundable Lock rings) and tag them with your ground wire. all metal parts must be bonded together.

Cheaper option, go buy a bag of the plastic type connectors

Care to cite. They have been used in that way more times then anyone can count. No ground lug needed, because the box is Plastic not metal.

NEC states "Not Required", not "Illegal", when the NM clamps are used with Smart Boxes and the PVC or Fiberglass boxes. That means that the NEC considers it personal choice if you wish to use the NM or MC/AC clamps on that particular style of box.

 

[IslandGuy]

I'm with Greg on this. Keep in mind a plastic 1900 box used for devices would get a metal plaster ring, wouldn't it? How would you ground that?

 

[Jim Port]

Plastic covers and plaster rings are used with plastic boxes.

 

[gregzoll]

I'm with Greg on this. Keep in mind a plastic 1900 box used for devices would get a metal plaster ring, wouldn't it? How would you ground that?

I would, unless you use a Smart box after throwing up the drywall and go back to cut the holes.

I wished that I used a metal box for the light abobe the vanity, when I did my bath remodel. Did not notice a twist in that 2x4, until I put up the Green board. Used metal for the box for the three switchs.

 

[Jim Port]

Care to cite. They have been used in that way more times then anyone can count. No ground lug needed, because the box is Plastic not metal.

NEC states "Not Required", not "Illegal", when the NM clamps are used with Smart Boxes and the PVC or Fiberglass boxes. That means that the NEC considers it personal choice if you wish to use the NM or MC/AC clamps on that particular style of box.

I know this will not be answered, but, Greg, can to cite the allowance for this? Please provide the code article.

 

[Msradell]

Nope, can't do that unless you want to go buy a whole bunch of GRLs (Groundable Lock rings) and tag them with your ground wire. all metal parts must be bonded together.

Cheaper option, go buy a bag of the plastic type connectors

Could that possibly be a Canadian regulation? I've never seen it in NEC codes.

 

[gregzoll]

Could that possibly be a Canadian regulation? I've never seen it in NEC codes.

Sadly it is.