Phase conductors in separate conduits

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FMW

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Where can i find information that explains the disadvantages of installing conductors of a three phase circuit in separate conduit? That is each phase in a separate conduit.
 
All 3 (or 4) conductors should be run in the same conduit. Parallel runs should be done the same way, paralleling all the 3 phase conductors in the same conduit and paralleling the conduits.

By running all the "A"s, "B"s and "C"s in their own conduits, you set up issues like conduit heating and emi/rfi issues
 
Den7422 said:
All 3 (or 4) conductors should be run in the same conduit. Parallel runs should be done the same way, paralleling all the 3 phase conductors in the same conduit and paralleling the conduits.

By running all the "A"s, "B"s and "C"s in their own conduits, you set up issues like conduit heating and emi/rfi issues
Click to expand...

I don't disagree, but as shown in Post 3 of the second link (above), some POCOs allow it with nonmetallic conduit and it sure makes a neat job in terminating.
 
Use all PVC conduit with no metallic bushings, rebar, electrical enclosures or structural steel encircling the individual cables. All cables must go through the same hole or opening in the equipment enclosure to prevent circulating eddy currents and excesive heating.
 
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