4" Octagon Box

[infinity]

I was recently having a discussion with a fellow electrician. He was trying to tell me that you cannot enter into the side of a 4" octagon box. One of these:

He quoted 314.2. After listening for a minute I asked why he thought that an octagon box is a round box? He said that he and many other electricians always called that box a 4" round box hence the confusion on his part. Does anyone else refer to a 4" octagon box, as a 4" round box?

 

[Rewire]

I always called it a 4-O box or "the round lookin one" when addressing apprentice.

 

[wirebender]

I've never heard it called a round box. It has flat sides. How do you get round out of that?

 

[chris kennedy]

It ain't round. A pancake box is round, a PVC Carlon floor box is round.

Thats an octagon.

 

[rcarroll]

I always called it an octagon box. If you aren't allowed to enter the sides, why are there knockouts in them?

 

[jerm]

we call those 8b's around these parts. I don't know why we call it that, but it does have 8 sides. it isn't round.

 

[LarryFine]

One of these:

He quoted 314.2.

Tell him to re-read 314.2 again. The whole idea is to avoid having locknuts trying to bite into a curved surface. Then have him note that the KO's on an octagon box are in the flat surfaces, and not the rounded sides.

 

[celtic]

Does anyone else refer to a 4" octagon box, as a 4" round box?

Yup.
The picture shows a 4" round box ~ although it's an octagon box. I haven't seen a real round box installed ever...I've seen them installed after the fact, but never been on the installing end of one :wink:

 

[infinity]

Yup.
The picture shows a 4" round box ~ although it's an octagon box. I haven't seen a real round box installed ever...I've seen them installed after the fact, but never been on the installing end of one :wink:

Must be an New Jersey thing. The guy tells me that everyone calls them round boxes.

 

[iwire]

I usually say "four inch rounds" but I do know they are actually octagons. :smile:

 

[electricman2]

I call them round as well, I guess to distinguish them from the square or 4
S

 

[Rockyd]

Want a 4" round box?

Here...

 

[iwire]

Looks a bit octagonish. :grin:

 

[Dennis Alwon]

Thomas and Betts calls this a 4" round cover with 1/2" KO. Check it out here

 

[Rockyd]

No sir! That is the finest polished Aluminum box that your eyes ever saw! Just look at those bosses, willing to accept only the the best threads. I will sell you, Mr Iwire, ten of them for a mere $500 dollars? Such a deal to you only! PM we might offer you a "special" discount.

 

[iwire]

No sir! That is the finest polished Aluminum box that your eyes ever saw! Just look at those bosses, willing to accept only the the best threads.

How can I argue with that. :grin:

 

[Rockyd]

Dennis,

I'll tell you what that speed is, as soon as I get back from Iwire's place. Think i'll get theire at about double that speed to close this deal!

 

[guschash]

I agree with the rest of the forum, what you are showing is a octagon box. Pancake box is round as others have stated.

 

[brantmacga]

i call those an octagonal box.

 

[monkey]

I've always called them 4/O metal. I thought the "O" was for Octagon.