StanRob
Member
- Location
- Gainesville,GA,USA
Raceway:
I have a 3? raceway (part pvc and part aluminum) that has (8) 3/0 thhn copper conductors. (2 sets of a,b,c and 2 neutrals).
I?m looking at table 310.15(B)(2)(a) and wondering if I should adjust by 80 (6 conductors (the 2 sets of a,b,c)) or if I should adjust by 70 (all 8 wires(the 2 sets of a,b,c and the 2 neutrals)).
Assuming that?s the correct table, I guess it boils down to whether or not the neutrals are considered ?current-carrying conductors? ? are they?
Setup:
GA Power Transformer is feeding a 480/277 3/0, 4-wire, 1200amp main breaker via (3) of the raceways described above.
What would be the adjusted rating of the main breaker in this scenario?
I have a 3? raceway (part pvc and part aluminum) that has (8) 3/0 thhn copper conductors. (2 sets of a,b,c and 2 neutrals).
I?m looking at table 310.15(B)(2)(a) and wondering if I should adjust by 80 (6 conductors (the 2 sets of a,b,c)) or if I should adjust by 70 (all 8 wires(the 2 sets of a,b,c and the 2 neutrals)).
Assuming that?s the correct table, I guess it boils down to whether or not the neutrals are considered ?current-carrying conductors? ? are they?
Setup:
GA Power Transformer is feeding a 480/277 3/0, 4-wire, 1200amp main breaker via (3) of the raceways described above.
What would be the adjusted rating of the main breaker in this scenario?