Derating from 90 degree column

Status
Not open for further replies.

davejwalker

Member
Location
Wyoming
Occupation
Electrician, Electrical Estimator
Is it allowable to do the derating required by table 310.15 (B)(2)a from the 90 degree column of table 310.16 if your equipment is only rated at 75 degrees? (Assuming that you are using 90 degree insulation). If so would someone please let me know exactly where to find that in the code book so I can share that others who are convinced otherwise. Thanks
 
Status
Not open for further replies.
Top