Communication conduits and Primary power conduits

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Mday

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How much distance is required between communication conduits and primary power conduits that is 35 KV.
The conduits will be barried underground incased in concrete.

I was looking at table 490-24 and it appears to be 18 inches.
We are worried about interference. The conduits are PVC.
 
Mday said:
How much distance is required between communication conduits and primary power conduits that is 35 KV.
The conduits will be barried underground incased in concrete.

I was looking at table 490-24 and it appears to be 18 inches.
We are worried about interference. The conduits are PVC.
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Welcome to the Forum.

490.24 applies to bare conductors.

I would look at T300.50 for the depth of your MV conduit. This puts you down 24" to the top of the conduit. Now bury your comm conduit 6" down.(could be under the surface, on top... See 725.3.)

Are these utility installs? They may have their own requirements.
 
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