User: shockingdave, Location: Dayton, TN
Asked on: Monday, April 11, 2011 at 1:37 pm EDT
Answered on: Tuesday, May 14, 2024 at 4:03 am EDT
Question: I am upgrading a private Christian school dormitory with an attached deans apartment. I have a 400 amp meter combo to two 200 amp panel approx 30' away. If this falls under residential, then 2/0 can be considered, if it is light commercial then 3/0 must be considered according 310.15/16. The wiring for this is located in the deans apartment which is physically attached to the dormitory. Only the second panel box has wiring that leaves this apartment and enters the dormitory. Does this fall under Residential or under Light Commercial?
The wiring for this project would be considered Light Commercial.According to NEC 310.15(B) and 310.16(A)(1) private dormitories are considered Light Commercial.The fact the second panel box has wiring leaving the apartment and entering the dormitory does not change this classification. Flag for review