Conduit installation in framing members

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Dave58er said:
Hi Brian, I must be missing something in my code book because I don't have this refference. Are you in '05?
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Actually, he's in the NECH....here is the commentary following 358.30(B):
See the commentary and example following 342.30(B)(4), which apply to horizontal runs of intermediate metal conduit.
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Thanks for clearing that up Celtic.

I am still a little confused though. Is 358.30(A) telling me the conduit must be secured every 10 feet while (B) is telling me I only have to support it?

I was under the impression thinwall had to be both but I think I might learn something new here tonight.:smile:
 
allenwayne said:
I see you have used that same line :)I had a helper that said I was older than dirt what did we walk on back then ??Without breaking stride I turned and said WATER ,any more stupid questions?????
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Pretty cold back in them days, wasn't it?:D
 
I`ve always been kind of hard on my helpers over the years.I had one complain that he always had to use the roto hammer to drill holes.So I told him to put it back in the truck and go back inside.Went to my tool box and broke out my 1 1/2 star chissel and a 10 lb engineers hammer and brought it back to him.You should have seen his eyes when I showed him how to use it.He tried to get me to let him go get the roto hammer but I said nope use this...........The next day he went and grabbed the roto hammer and I never heard him complain about anything again :)
 
What Brian is talking about is the "V" common on steel bar joists, 358.30(B)

allows the "V" to be the support,the only support is 3' from j-box.

He wants to know if it is ok to stack 4 or 5 runs of emt in the same "V"

groove, I don't see where it's not allowed!! I would like to hear more

comments on this as it is the first time I realized it is code compliant.
 
Hard time to the newbe.

Hard time to the newbe.

I used to have a boss that would just get pissed if I asked any questions to clarify what I was doing before I screwed up until one day it dawned on him that I was the apprentice and he was the teacher and realized that by asking first sure saved a lot of time and money doing redos.


It was cold back then. Hell was frozen over. I loved that you walked on water.
 
Dave58er said:
Thanks for clearing that up Celtic.

I am still a little confused though. Is 358.30(A) telling me the conduit must be secured every 10 feet while (B) is telling me I only have to support it?

I was under the impression thinwall had to be both but I think I might learn something new here tonight.:smile:
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There is a difference...
358.30(A) says EMT must be secured at 10/3...
358.30(B) says Horizontal runs of EMT supported by openings through framing members

For those w/o the NECH:
Section 342.30(B)(4) permits lengths of intermediate metal conduit (IMC) to be supported (but not necessarily secured) by framing members at 10-ft intervals, provided the IMC is secured and supported at least 3 ft from the box or enclosure. Installations where the IMC is installed through the bar joists is just one example and is shown in Exhibit 342.2.

I can't copy & paste the image...sorry:mad:

Exhibit 342.2 An example of intermediate metal conduit supported by framing members and securely fastened at the 3-ft distance from the box required by 342.30(B)(4).
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Section 342.30(B)(4) permits lengths of IMC to be supported (but not necessarily
secured) by framing members at 10-ft intervals, provided the IMC is secured and
supported at least 3 ft from the box or enclosure. Installations where the IMC is
installed through the bar joists is just one example and is shown in Exhibit 342.2.
Exhibit 342.2 An example of intermediate metal conduit supported by framing
members and securely fastened at the 3-ft distance from the box, as required by
342.30(B)(4).
 
It's nice to see some senior members looking at my question and coming out of the Fog. We can all learn from each other ... Thanks for the input from all of you veterans of the trade,keep up the good work.Brainsore
 
benaround said:
What Brian is talking about is the "V" common on steel bar joists, 358.30(B)

allows the "V" to be the support,the only support is 3' from j-box.

He wants to know if it is ok to stack 4 or 5 runs of emt in the same "V"

groove, I don't see where it's not allowed!! I would like to hear more

comments on this as it is the first time I realized it is code compliant.
Click to expand...

I guess it is as long as the conduit is in contact with the red iron or lumber of the truss system,that article states.(EMTsupported by openings through framing members )not other conduit bodies.
 
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