Hi,
Just ran into an area that I am not to familiar with and wanted to see if I could get a little help here. I was on a project recently and seen multiple cables maybe 20- 2/0 2 conductor MC cables (weatherproof) grouped together emerging from the ground. These also are run through about a 15' section of Trenwa Trench. i have attached some pictures with the corresponding questions below each picture. I did try and find my answers in the code but it was a little confusing when I was reading section 300.5 (D)1
Questions?
Should these cables be DE-rated since the are grouped together?
Also these cables run through a 15' section of Trenwa Trench system. Estimate that the Trenwa is filled to about 60% of the capacity. I could find no reference for Trenwa in the code for capacity only for cable tray. is there a code section for Trenwa?
Do these cables need physical protection when emerging from the ground? Although in this picture the cables are emerging near the leading edge of a panel these are still subject to mowers and weed whackers.
Basically the same as above but this project is in New England. So the question of frost comes into play.
The way I see it when frost does occur it will push the cables up into the concrete cover for the Trenwa. Should these cables also be physically protected.
Finally I did look at the Trenwa site and all the photos I seen of the Trenwa had end plates or a complete wall system installed. With no end plate or cover is this an approved method?
When I read section 300.5 (D)1 my interpretation is that this is illegal. should these cables be physically protected with a conduit system?
thanks
Just ran into an area that I am not to familiar with and wanted to see if I could get a little help here. I was on a project recently and seen multiple cables maybe 20- 2/0 2 conductor MC cables (weatherproof) grouped together emerging from the ground. These also are run through about a 15' section of Trenwa Trench. i have attached some pictures with the corresponding questions below each picture. I did try and find my answers in the code but it was a little confusing when I was reading section 300.5 (D)1
Questions?
Should these cables be DE-rated since the are grouped together?
Also these cables run through a 15' section of Trenwa Trench system. Estimate that the Trenwa is filled to about 60% of the capacity. I could find no reference for Trenwa in the code for capacity only for cable tray. is there a code section for Trenwa?
Do these cables need physical protection when emerging from the ground? Although in this picture the cables are emerging near the leading edge of a panel these are still subject to mowers and weed whackers.
Basically the same as above but this project is in New England. So the question of frost comes into play.
The way I see it when frost does occur it will push the cables up into the concrete cover for the Trenwa. Should these cables also be physically protected.
Finally I did look at the Trenwa site and all the photos I seen of the Trenwa had end plates or a complete wall system installed. With no end plate or cover is this an approved method?
When I read section 300.5 (D)1 my interpretation is that this is illegal. should these cables be physically protected with a conduit system?
thanks
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