Conduit

[cowboyjwc]

Hope I can do this justice. Have a pull box in the ceiling of an office building. One of the conduits comes into the box at about a 22 degree angle (maybe a little less) so that only about one tooth of the lock nut is even touching the box (no grounding conductor). The contractor wants to tell me that it's to code so I open the box, which I hadn't done previously (that's when I saw the lock nut) and there were two four inch holes in the back of the box and no plastic bushings on the conduit.

Still want to argue code?

 

[qcroanoke]

Hope I can do this justice. Have a pull box in the ceiling of an office building. One of the conduits comes into the box at about a 22 degree angle (maybe a little less) so that only about one tooth of the lock nut is even touching the box (no grounding conductor). The contractor wants to tell me that it's to code so I open the box, which I hadn't done previously (that's when I saw the lock nut) and there were two four inch holes in the back of the box and no plastic bushings on the conduit.

Still want to argue code?

in reference to the bushings, what size wire?

 

[NorthwestPV]

Just tell them that the installation needs to be done in a workmanlike manner. For the system to be grounded properly the connector needs to make full contact with the box. If they argue with that, pull out the AHJ card. LOL

 

[cowboyjwc]

in reference to the bushings, what size wire?

#4 the size that requires a bushing.

 

[electricalist]

I was gonna say 3 for some reason. What if the connector is PVC and has your #4 s or my #3 s, does it still need a plastic bushing?

 

[kwired]

I was gonna say 3 for some reason. What if the connector is PVC and has your #4 s or my #3 s, does it still need a plastic bushing?

Some people don't think it does, I disagree unless the fitting is designed with a rounded edge making it not necessary - haven't seen a PVC TA yet that doesn't have a fairly sharp edge. Typical insulated throat metallic raceway fittings are likely intended to eliminate the need for a bushing though.