Sparky1547
New member
- Location
- Minnesota
Hey guys and gals, first time poster so I apologize if this has been answered elsewhere.
I have 3 parallel feeder runs from 3 AC recombiners that are mounted next to an inverter rack running back to an equipment pad. The drawings call for a trench with both AC and DC conduits to be placed along the same plane in one row. The issue I have is there are upwards of 15-20 DC conduits that need to run in the same trench. This would create a trench that is around the realm of 10+ feet wide to maintain my conduit spacing.
My question is, from an engineering standpoint, would I be able to have a trench half as wide, run all the AC conduits low, maintain a similar vertical spacing with additional backfill on top of the AC runs, and run my DC conduits above. Still maintaining my horizontal spacing between AC-AC and DC-DC but stacking the conduits between backfill?
Additional question, could I then run another layer of remaining DC conduits on top of the previous DC pipes so long as I maintain spacing and burial depths?
-The trench would be 48" wide by 48" deep
-The AC conduits are 3" pvc with parallel 350kcmil
-The DC conduits are 2" pvc with 8 #10's + gnd
What are some factors that come into play in this equation?
If i left anything pertinent out, I'd be happy to include additional info.
Thanks for any and all replies
I have 3 parallel feeder runs from 3 AC recombiners that are mounted next to an inverter rack running back to an equipment pad. The drawings call for a trench with both AC and DC conduits to be placed along the same plane in one row. The issue I have is there are upwards of 15-20 DC conduits that need to run in the same trench. This would create a trench that is around the realm of 10+ feet wide to maintain my conduit spacing.
My question is, from an engineering standpoint, would I be able to have a trench half as wide, run all the AC conduits low, maintain a similar vertical spacing with additional backfill on top of the AC runs, and run my DC conduits above. Still maintaining my horizontal spacing between AC-AC and DC-DC but stacking the conduits between backfill?
Additional question, could I then run another layer of remaining DC conduits on top of the previous DC pipes so long as I maintain spacing and burial depths?
-The trench would be 48" wide by 48" deep
-The AC conduits are 3" pvc with parallel 350kcmil
-The DC conduits are 2" pvc with 8 #10's + gnd
What are some factors that come into play in this equation?
If i left anything pertinent out, I'd be happy to include additional info.
Thanks for any and all replies