I'm trying to determine if Emergency Panels, powered by the Main MDP and the EM Powered by the GenSet, which serves em lighting, elevators, and RTUs, must also be located in the same room as the ATS or if they can be placed closer to the loads they serve to reduce voltage drop.
For example: Under normal operation, Emergency Panel 'EM1' runs at 1000A; during an outage, RTUs power-shed to fan-only mode through an 800A ATS. I would like to place Panel 'EM1' central to these loads, rather than ~200' away.
Nothing I've reviewed so far has told me I can't do this, but I'm concerned I'm missing something.
Thank you for your support!
For example: Under normal operation, Emergency Panel 'EM1' runs at 1000A; during an outage, RTUs power-shed to fan-only mode through an 800A ATS. I would like to place Panel 'EM1' central to these loads, rather than ~200' away.
Nothing I've reviewed so far has told me I can't do this, but I'm concerned I'm missing something.
NEC Article 700 (Emergency Systems):
- 700.10(B) Wiring:
(1) Wiring form normal power source located in transfer equipment enclosures.
(5) Wiring from an emergency source supply emergency and other (non-emergency) loads in accordance with .... as follows:
c. Emergency circuits shall not originate from the same vertical switchgear section, vertical switchboard section, panelboard enclosure, or individual disconnect enclosure as other circuits.
d. It shall be permissible to utilize single or multiple feeders to supply distribution equipment between an emergency source and the point where the emergency loads are separated from all other loads.- This should all be achieved by the ATS in the Electrical Room that powers the Emergency Panels located elsewhere, correct? Means and Methods would just require fire rated conduit?
- This should all be achieved by the ATS in the Electrical Room that powers the Emergency Panels located elsewhere, correct? Means and Methods would just require fire rated conduit?
Thank you for your support!
