First off sorry if this re-posted. Thought I loaded it in but could not find it.
I was on a job site the other day and came across some interesting conduit runs and unusual install methods. First off I notice about a 1,500' run of 4"EMT that was mounted off the ground by concrete blocks and fastened with uni-strut. There were 2 junction boxes cut in the first one at about 800' and the 2nd one about another 400' after the first one. I had asked what the flex was for and was told that it was for expansion. I do not think it is working as if you look at the couplings you can see that there has been movement(pic attached).
In my opinion looks like pretty sloppy workmanship and questions if it even meets code. I do not know how the conduit can be properly grounded if there is flex on both ends that isolates the conduit. To top it off this contains 13,800 volts.
The above photo is typical of all the 13,800 conduit runs on this site that being flex runs from the conduit to either the junction box or equipment. Also of note in many locations as shown above is the support for the conduit is almost 5' back from the end of he conduit.
above photos showing movement of the conduit.
The balancing conduit. 4" EMT supported by one strut clip in the middle and flex on the ends. Nice way to install 13,800.
Typical 13,800 volt junction box install. Notice the 16' run of 1" EMT unsupported with the coupling floating in the air. Wonder how long that will last.
I was on a job site the other day and came across some interesting conduit runs and unusual install methods. First off I notice about a 1,500' run of 4"EMT that was mounted off the ground by concrete blocks and fastened with uni-strut. There were 2 junction boxes cut in the first one at about 800' and the 2nd one about another 400' after the first one. I had asked what the flex was for and was told that it was for expansion. I do not think it is working as if you look at the couplings you can see that there has been movement(pic attached).
In my opinion looks like pretty sloppy workmanship and questions if it even meets code. I do not know how the conduit can be properly grounded if there is flex on both ends that isolates the conduit. To top it off this contains 13,800 volts.
The above photo is typical of all the 13,800 conduit runs on this site that being flex runs from the conduit to either the junction box or equipment. Also of note in many locations as shown above is the support for the conduit is almost 5' back from the end of he conduit.
above photos showing movement of the conduit.
The balancing conduit. 4" EMT supported by one strut clip in the middle and flex on the ends. Nice way to install 13,800.
Typical 13,800 volt junction box install. Notice the 16' run of 1" EMT unsupported with the coupling floating in the air. Wonder how long that will last.