Why must boxes be installed flush with the surface?

[Dave58er]

4" x 4" x 2 1/8" box with MC clamps, 3/4" single gang ring and a Caddy H2-3 to connect it to the stud.

Was that for 5/8" drywall?

 

[busman]

Bob (Iwire),

I was certainly referring to the photo posted by Mike03a3. Sorry for any confusion. Thanks for the help George.

Mark

 

[iwire]

Was that for 5/8" drywall?

Yes, I use 5/8" rings for 1/2" drywall and 3/4" rings for 5/8" drywall.

The factory measurement is overall, not just the raised part, by the time you add the 'flat' part and the screw heads they come out perfect.

 

[iwire]

Bob (Iwire),

I was certainly referring to the photo posted by Mike03a3.

DOH! my mistake.

 

[Dave58er]

Yes, I use 5/8" rings for 1/2" drywall and 3/4" rings for 5/8" drywall.

The factory measurement is overall, not just the raised part, by the time you add the 'flat' part and the screw heads they come out perfect.

I like that Bob, it was the answer I was hoping to get back. I wish more people would do that. Why is it that every time a guy has 5/8" drywall he orders 5/8" plaster rings, then wonders why they are so far back?

IMHO this should happen like twice before you start thinking, hey, maybe I should try something different.

 

[marinesgt0411]

befoe you start thinking

you mean that is allowed this is a new concept for some

and as to the origanal question probably for the same reason that boxes are required "to keep the smoke in."

 

[George Stolz]

I thought that's what the insulation on the conductors did?

 

[dnem]

The sparkguard is used on the recessed box in a combustible surface to protect the combustible from being ignited by a spark. . It's used with masonry to protect the wire insulation from being cut by the sharp and/or abrasive edges of the masonry.

Altho drywall surfaces aren't exempt by 314.20, for drywall I don't see any reason to worry about them as a contractor or look for them as an inspector.

David

 

[LarryFine]

I like that Bob, it was the answer I was hoping to get back. I wish more people would do that. Why is it that every time a guy has 5/8" drywall he orders 5/8" plaster rings, then wonders why they are so far back?

Agreed. I even mentioned this in the Colorado Jim thread.

 

[iwire]

I thought that's what the insulation on the conductors did?

?

The insulation is what makes the smoke.

I am really not following you George, do you deny that 'stuff' happens?

If the insulation methods where perfect we could pretty much eliminate OCP.

 

[George Stolz]

?

The insulation is what makes the smoke.

I am really not following you George, do you deny that 'stuff' happens?

If the insulation methods where perfect we could pretty much eliminate OCP.

Bob, you missed my smiley. I was thinking back to The Smoke Theory of Electrical Circuits. Sorry for the confusion.