Pendant strain relief

[wireday]

I have a 4square mounted to the ceiling, want to do a pendant for a #10/3 SO cord. Am I allowed to knock out the 1/2 inch hole to 3/4 on the cover ?

 

[LarryFine]

I can't think of a reason why not.

 

[markebenson]

what type of pendant?

 

[wireday]

what type of pendant?

Just a short cord drop about 6 feet, the only 4 square covers seem to only have a 1/2 inch knockout, my cord needs 3/4.

 

[synchro]

You might be better off starting with a blank cover and drilling a hole just large enough to clear the bolt of a 3/4 knockout punch. Otherwise it may be a struggle to keep the punch properly centered in a 1/2 hole if the bolt of your punch is significantly smaller. I think it can also produce a better result.

 

[LarryFine]

You might be better off starting with a blank cover and drilling a hole just large enough to clear the bolt of a 3/4 knockout punch. Otherwise it may be a struggle to keep the punch properly centered in a 1/2 hole if the bolt of your punch is significantly smaller. I think it can also produce a better result.

The K.O. set I have has a draw bolt that will stay centered in a 1/2" K.O. (7/8") hole.

 

[wireday]

I usually draw some cross hairs

 

[Frank DuVal]

The K.O. set I have has a draw bolt that will stay centered in a 1/2" K.O. (7/8") hole.

In fact Greenlee hydraulic punch sets come exactly that way, 1/2" KO punch is 3/8 draw screw and all the other sizes use a draw screw that centers close enough in that 1/2" KO hole.

 

[LarryFine]

In fact Greenlee hydraulic punch sets come exactly that way, 1/2" KO punch is 3/8 draw screw and all the other sizes use a draw screw that centers close enough in that 1/2" KO hole.

Right. That's so you only have to drill a hole for the 3/8 screw, and use the 1/2" K.O. if you're going larger.

 

[MTW]

I normally skip that process on that job, and use a blank plate and a holecutter. No layout or cross-hairs and punch centering required.
I also use bus drop cable, Kellems grip, and a sky-ty hanger for a stress relief.

 

[ramsy]

I normally skip that process on that job, and use a blank plate and a holecutter. No layout or cross-hairs and punch centering required.
I also use bus drop cable, Kellems grip, and a sky-ty hanger for a stress relief.

What wiring method is this 12/3 Bus Drop Cable? NEC 370.20(A)2 says Cablebus can't be smaller than 1/0

 

[MTW]

368.56 B

 

[ramsy]

Thanks for posting. Nice looking work.

Must be nice not having to bid against Home Cheepo shoppers.

 

[Little Bill]

For something no larger than 3/4", I would just use a step bit to enlarge the hole. You could bolt the cover down on a couple of scraps of 2x4 to hold it, then drill the hole. Saves having to do all that up at the ceiling.