Services and disconnects

[Uncle Bob]

I got this question today; and am not sure I understand. This is for a building accessory to two others. It's a large church. "Existing service #1 has 1200A and 400A service disconnects. Existing service #2 has 200A, 200A, 200A, 300A service disconnects. Our plan is to add two more 400A disconnects to the existing service #2 if the utility company can handle the additional load on the existing service conductors/transformer. Our decision is based on the following NEC criteria.



NEC 230.2©(1): We are allowed to have two services since our total ampacity will be 3,300 amps.

NEC 230.40 Exception No. 2: We are allowed to have a single set of service conductors supplying up to (6) grouped disconnects.

NEC 230.71: We are allowed to have up to (6) disconnects grouped together per service.

This is all the information I have. 2011 NEC; Thanks, Uncle Bob

 

[chris kennedy]

Sounds OK to me UB. Whats your concern?

 

[Uncle Bob]

Chris, thanks, I'm just getting too old and starting to forget how to figure some of this stuff; especially the commercial electrical (my weakness). Thanks for the help. Uncle Bob

 

[Gregg Harris]

My guess would be the POCO will drop a second set of conductors to meet the demand

 

[steveray]

Hunh....never thought about the possibility of more than 6 discos with multiple services to one buiding......Make sure they get all the labelling UB...