CU to AL & Conduit

horsegoer

Senior Member
Location
NJ
Have 4 #350 & 1 #1G in 3" PVC. Doing CU to Al conversion and per the attached pic it looks like the 4 #500 AL can still fit within the 3" conduit.

Why doesnt the calculator let me put in ground size?
Where is NEC would I find new ground size needed for #500 AL?

Thanks.
 

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augie47

Moderator
Staff member
Location
Tennessee
Occupation
State Electrical Inspector (Retired)
Referencing the NEC, if it's a feeder, 250.122 is still the location to select the EquipGr based on the breaker size.
If you are changing the EG to AL also, it would be a 2/0
 
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