Does anyone know of a NEC requirement for horizontal seperation on direct bury conductor?
I am installing a 240V, 3-phase, 20-amp, direct buried feed from a pump to a subpanel at the pump inlet screen. The screen is a mesh drum that rotates, and has a pump to feed a spray bar, that rinses off the moss, etc.
I can find the depth of bury, and requirement for a warning tape in section 300.5.
The contractor wants to know if he can put the conductor in the same trench as the water feed from the screen to the pump.
I have seen them buried under the haunch of the pipe, twelve inches below the bottom of the pipe, in a seperate trench, and level with the spring line of the pipe with 18 and 24-inch seperation.
I have tried figuring it out from the NEC, and am stuck.
Replies
If you're digging a trench, why not lay in a plastic conduit? Might make repairs easier later.
"Put your creed in your deed." Emerson
"When asked if you can do something, tell'em "Why certainly I can", then get busy and find a way to do it." T. Roosevelt
I had a similar case where I buried a water pipe beside a piece of Teck cable. The inspector couldn't find anything in the code, so we just separated the two with 12" pieces of 2 x 4 in the trench about 4' o.c. Covered with a bit of sand and backfilled.
Scott.
Always remember those first immortal words that Adam said to Eve, “You’d better stand back, I don’t know how big this thing’s going to get.”
we bury the well to house cable & pipe together all the time on new homes