[dielectricunion]

I don't use many octagon boxes, but when I do, I mount them to sit flush with the finished wall surface (obviously, i guess).

The problem I've had is, using 1.5" deep octagon box and coming into it with 1/2" EMT on the side, the box connector and EMT offset project beyond the stud. This means the drywall has to be shaved/notched a few inches off the box.

Should I be setting the box back so its flush to the stud and not the drywall?

 

[A Little Short]

I don't use many octagon boxes, but when I do, I mount them to sit flush with the finished wall surface (obviously, i guess).

The problem I've had is, using 1.5" deep octagon box and coming into it with 1/2" EMT on the side, the box connector and EMT offset project beyond the stud. This means the drywall has to be shaved/notched a few inches off the box.

Should I be setting the box back so its flush to the stud and not the drywall?

Why are you doing a box offset that is behind drywall? Because of the holes in the studs not lining up with box KO?

 

[frenchelectrican]

What kind of stud and the type of it ??

Why you want to use 1.5 inch deep oct boxes ?

If you have alot room i would use deeper oct boxes ( typially 2.5 inch ) and can rum emt in straight shot. No offset is needed...

 

[99cents]

Buy a deeper box.

 

[Majewski]

Why this box instead of another type of box?

 

[PlugsAndLights]

If you must run EMT and use octagons, wouldn't deeper octagons
be a better option?
Don't know about the code down your way, but up here boxes aren't
supposed to be set back from the final finish more than 6mm....that's
about 1/4". Zero setback is allowed if the finish is combustible.
P&L

edit: took too long to type this and 3 similar answers snuck in ahead!

 

[frenchelectrican]

If you must run EMT and use octagons, wouldn't deeper octagons
be a better option?
Don't know about the code down your way, but up here boxes aren't
supposed to be set back from the final finish more than 6mm....that's
about 1/4". Zero setback is allowed if the finish is combustible.
P&L

Pretty much the same in usa and ditto in Philippines.

 

[PlugsAndLights]

If you really want to use 1 1/2 ocatgons and set them back further, you
could use arlington octagon extensions:
http://www.amazon.com/Arlington-Industries-BE1R-Ceiling-Extender/dp/B007IZKDUC

Better know exactly where your boxes are though cause the drywallers will
go right over them....more than usual....:bangin:

 

[dielectricunion]

True, true... it is kind of stupid to use 1.5" octagon.

I've just done it several times before and wondered why they even bother having KO's on the side if any box connector there will interfere with 1/2" drywall.

The only reason I've used an offset is to keep the pipe from being below the plane of the studs.

 

[PlugsAndLights]

True, true... it is kind of stupid to use 1.5" octagon.

I've just done it several times before and wondered why they even bother having KO's on the side if any box connector there will interfere with 1/2" drywall.

The only reason I've used an offset is to keep the pipe from being below the plane of the studs.

They have 1 1/2" octagons with KO's because they aren't always
recessed. Could be attached to the bottom of an open truss or
surface mounted on a flat concrete ceiling as in storeage room
in the basement of a commercial building.
Cheers,
P&L

 

[ponyboy]

Why are you using an octagon in a wall? Why not a side bracket 4 square and a round mud ring?


Sent from my iPhone using Tapatalk

 

[MechanicalDVR]

I believe 2 1/8" deep boxes have 3/4" from the front edge of the box to the 1/2" KO.

 

[Southeast Power]

I don't use many octagon boxes, but when I do, I mount them to sit flush with the finished wall surface (obviously, i guess).

The problem I've had is, using 1.5" deep octagon box and coming into it with 1/2" EMT on the side, the box connector and EMT offset project beyond the stud. This means the drywall has to be shaved/notched a few inches off the box.

Should I be setting the box back so its flush to the stud and not the drywall?

If in a ceiling, I would pipe into the back of the box. If it has to be a round box, pipe into the side of it and let the rockers and finishers do their job.