480 V ATS

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AKB

Just wondering
Location
Hillsdale, NJ
Occupation
Contractor
Hello,
The other day one inspector told me that 480 V ATS must be in and enclosure in an electrical room that has both 480V and 208 V services.
Does this have to do with level 1 or 2 emergency standby system or it is more involved?
In what situation this must be done.
I looked at NEC and NFPA 101, 110, and couldn't find a reference.
Mid-rise residential with elevator and fire pump in NJ.
Thank you,
 
I'm still waiting on that. He mentioned something about Level 1 and 2 type Emergency Standby Power Source. He is gone on vacation. So, I need to wait.
Thanks
 
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