User: dala, Location: North Georgia mountains
Asked on: Tuesday, March 22, 2011 at 5:40 pm EDT
Answered on: Tuesday, May 14, 2024 at 3:07 am EDT
Question: Hi, I'm in the planning stage of connecting a 3 phase 400 amp generator as backup power for a restaurant. I intend to power the whole building with this generator. Does the NEC require a disconnecting means between the meter and the automatic transfer switch?
Yes, the NEC requires a disconnecting means between the meter and the automatic transfer switch.
Section 705.12(B)(1) of the NEC states:> A disconnecting means shall be installed between the service entrance conductors and the generator source.This disconnecting means is required to isolate the generator from the utility power when the generator is not in use. It is typically installed in the form of a main breaker or switch. Flag for review