STRUT12034
Member
If a 4" square box, used only for splices is supported within 18" of the box by 2 or 3 conduits, is a seperate hangar needed, thanks strutt12034
4" square box support
- Thread starter STRUT12034
- Start date
- Status
- Location
- Logan, Utah
Welcome to the forum.
Take a look at 314.23(E). The quick answer is that a standard 4 square box can't be supported by raceways.
Chris
Take a look at 314.23(E). The quick answer is that a standard 4 square box can't be supported by raceways.
Chris
mcclary's electrical
Senior Member
- Location
- VA
You can't do it with a 1900,,,but you can do it.See 314.23 (e)
mcclary's electrical
Senior Member
- Location
- VA
Man Chris,,,you're fast
- Location
- Logan, Utah
STRUT12034
Member
So what you are saying is it would have to have threaded hubs?
STRUT12034
Member
The box would have to have threaded hubs?
LarryFine
Master Electrician Electric Contractor Richmond VA
- Location
- Henrico County, VA
- Occupation
- Electrical Contractor
- Location
- Logan, Utah
Correct, 314.23(E) allows a box with hubs to be supported by the raceways entering the box.
For a standard 4 square box it must be supported independant of the raceways.
Chris
- Location
- Massachusetts
OK, I have a 4" Square box facing the ceiling floating 18" above the floor, a 1/2" EMT enters from the right another 1/2" EMT leaves on the left. My conductors will be pulled through these raceways.
Now I need to support the box so I happen to grab some more EMT a single connector and make a support out of the back of the box to the floor. No conductors will be in this support.
Red tag or not?
Now I need to support the box so I happen to grab some more EMT a single connector and make a support out of the back of the box to the floor. No conductors will be in this support.
Red tag or not?
- Location
- Logan, Utah
mcclary's electrical
Senior Member
- Location
- VA
Provided the support conduit is not smaller than the wired conduit, I think it's legal
Red tag it still doesn't comply with section 314.23 (E) and I don't think that you will find an emt connector that is listed to support anything. Use a piece of unistrut.
- Location
- Massachusetts
mcclary's electrical
Senior Member
- Location
- VA
LOL get 'em Bob!! :grin:
I would think if the shiny tubing has adequate mechanical strength I'd call it good to go.
Heck the box is more likely to give way before the support or conduits will.
So I guess we now need to encase the box in concrete..but wait, it's not approved for that.
Guess we need to use a conduit body as a pull point...if it's listed for that purpose.
Or just forget it and run an SO cord.
Bob I was just trying to get you going. In your application the conduit secured to the floor is not a raceway. Therefore section 314.23 (E) would not apply. I've passed support methods more questionable than yours.
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