Conduit in concrete

D

Dylan883

Member
Location
Pennsylvania
Occupation
Industrial electrician
Okay so hopefully I don't get blasted for asking this. So I'll try to make long story short. We had some equipment we originally put all our conduit in concrete so there was no trip Hazzard or overhead Hazzard. They decided to move this equipment and cut everything flush to floor.

So now they want the equipment back where it was but conduit is cut flush with floor and if you were to run on ground there would be a trip Hazzard. Someone threw out the idea of putting a junction box where conduit is cut. Is there any codes I can refer to if this is okay or not? My issue is the conduit will not connect to box just flow into it. This is 240v three phase and 480v three phase.
 
I thought that to but it's on a bend coming up so it's not straight piece of conduit unless I hammer out enough to go back before 90
 
Question, Is it the same guy that decided to cut them flush to the floor, that says to lay the box over the holes in the floor?
 
MTW said:
Question, Is it the same guy that decided to cut them flush to the floor, that says to lay the box over the holes in the floor?
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How'd you guess lol I feel we should jack hammer it out but I also don't wanna do all the work cause I fought to not move them or leave the stubs if they wanted to bring it back.
 
saw cut the floor back to where the pipes are straight before you start the jackhammer process, and be sure to completely plug them pipes before the hammering starts
 
The conduit is required to be connected to the box. How you do that is up to you. I've seen guys use boxes with open backs anchored directly to the concrete but that isn't code compliant.
 
A tip for when you put them back in, put couplings on the ends that are flush with the floor, so that later they could be closed off with some flush plugs.
 
infinity said:
The conduit is required to be connected to the box. How you do that is up to you. I've seen guys use boxes with open backs anchored directly to the concrete but that isn't code compliant.
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Yeah that's what they were wanting but I was saying I didn't think that would be compliant but would be easier for me but I'm not putting my name on something that isn't technically right.
 
Saw cutting and chipping concrete ain’t that big a deal. 👍

Just do it right and sleep better at night. With rigid you will have bonding issues if you don’t
 
Luckily one conduit did have a coupling I just had to get a easy out in to pull old pipe out but the other pipe is at a 90 so that one I'll be getting the jack hammer out

Did I mention they were in such a hurry they put the machine over it so now it's difficult to work. I still think this beats running pipe on the floor then having a platform built.

Thanks for any suggestions
 
infinity said:
Tack weld the raceway? Might have a problem with 300.18(B).
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Sure, if we're being technical. I was thinking along the lines of welding a rigid coupling to the conduit right at the floor surface. Then you can transition from there. It might be a technical violation of the letter of the code, but I don't think any reasonable inspector would quibble.
 
Dylan883 said:
Did I mention they were in such a hurry they put the machine over it so now it's difficult to work. I still think this beats running pipe on the floor then having a platform built.

Thanks for any suggestions
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Take the time to do it right, you'll sleep better at night, your coworkers will be better protected, and your management might learn not to be so knee jerk reactive. And you will remember when putting in new installations to think about the adaptability of the installation for future uses. good luck with it.
 
CoolWill said:
Sure, if we're being technical. I was thinking along the lines of welding a rigid coupling to the conduit right at the floor surface. Then you can transition from there. It might be a technical violation of the letter of the code, but I don't think any reasonable inspector would quibble.
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So with the conduit there was air piping that was also cut and I'm doing exactly what you said with the air and welding in coupling
 
MTW said:
Take the time to do it right, you'll sleep better at night, your coworkers will be better protected, and your management might learn not to be so knee jerk reactive. And you will remember when putting in new installations to think about the adaptability of the installation for future uses. good luck with it.
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When it was installed there was couplings put in but we did not pour the concrete and things didn't match up right well for one it did but not the other.
 
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