Conduit transition

A

anbm

Senior Member
Location
TX
Occupation
Designer
How to transit 4"PVC conduit (out of ductbank) to 2"C and terminate at 225A, 480/3 elec. panel above ground?
Duct bank is 5 feet from the 225A panel. Using conduit coupling? is it available in the market? or an underground pull box?
 
If you must reduce use a PVC Swedge Reducer. Its like a funnel so make an easy transition to pull through.

Why not keep the 4" for the last 5'?
 
better protection when penetrate concrete slab and up to panel above? also spec. calls for it.
 
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