Red Wiggler
Senior Member
Article 376.22 (A) (B) are references to (A)Cross-Sectional Areas of a Wireway and (B) Adjustment Factors.
When discussing the Adjustment Factors this section refers to 310.15(B)(2)(a) when current-carrying conductors exceed 30.
Does that mean you begin derating as the table shows 4-6 = 80%? Or does it mean 34-36 = 80% since you have already been given 30 conductors in the raceway that have not been derated?
Surely it doesn't mean the first 30 are fully rated and the next 4-6 will be rated at 80%...does it.
When discussing the Adjustment Factors this section refers to 310.15(B)(2)(a) when current-carrying conductors exceed 30.
Does that mean you begin derating as the table shows 4-6 = 80%? Or does it mean 34-36 = 80% since you have already been given 30 conductors in the raceway that have not been derated?
Surely it doesn't mean the first 30 are fully rated and the next 4-6 will be rated at 80%...does it.
