round box

[Bobhook149]

314.2 Does this mean you can't use a round box for EMT or anything with a locknut

 

[infinity]

You cannot enter the side of a round box. This does not apply to an octagon box however.

 

[480sparky]

Yepper! But most 'round' boxes have 4 flat sides.

 

[infinity]

Yepper! But most 'round' boxes have 4 flat sides.

That would be an octagon box not a round box.

 

[jusme123]

octogon is not round

 

[nakulak]

you can come into the back of it

 

[mcclary's electrical]

Yes, that's the way I read it

 

[Buck Parrish]

Can you enter in to the back of a pancake box, they are round ?
Okay their are lots of round boxes just not ussually metal ones.

 

[480sparky]

That would be an octagon box not a round box.

Many call octagon / 8b boxes 'round' boxes.

 

[Bobhook149]

do they make any true round boxes metal? Is it talking about a box ment for romex??

 

[infinity]

do they make any true round boxes metal? Is it talking about a box ment for romex??

Here's one:

 

[cadpoint]

... are to connected to the side of the box.

I beleive is the key part of the statement.
While they do make deeper draw octagonal boxes, I can't recall a deep drawn circle box. ...

 

[Bobhook149]

how could you come into the side anyway...... Thanks for the help. When the code said round i thought octagon.

 

[masterinbama]

how could you come into the side anyway...... Thanks for the help. When the code said round i thought octagon.

If your running romex you just cut a notch in the side and let her fly. At least that's what I run across a lot around here.

 

[480sparky]

how could you come into the side anyway...... Thanks for the help. When the code said round i thought octagon.

There used to be boxes that really were round.

 

[LarryFine]

This should be simple enough; no fittings in a curved surface, which I've never seen a factory KO in anyway.

 

[macmikeman]

They don't make a truly round anything, even ball bearings but try argueing that with AHJ Wp fixture boxes are more or less round and have side entry's for conduit, but it flattens out around the threaded hub area, allowing for conduit or fittings to thread in and seat tight.

 

[al hildenbrand]

"Round" junction boxes, 1? " deep by 4" across, with trade size ?" K.O.s in the curved round surface, were available back in the early 1900s. And they really were "round" just like today's flatpan ?" high side walls are round.

This was the early period when rigid metallic conduit commonly was painted black, with a varnish inside coat, to inhibit rust, and the RMC tended to be installed, exposed, in basements, and was used in wiring installations where more money was being spent.

In my experience, these boxes had #10-24 threaded cover screw holes about half the time, and were also painted black to inhibit rust.

Even with the double locknutting commonly used to connect a stick of RMC to the round box, it was found that the questionable electrical continutity of the locknut-to-curved box wall was a source of problems.

 

[infinity]

Many call octagon / 8b boxes 'round' boxes.

That's true, we even call them 4 inch round boxes. But the 314.2 sees it differently.