120V Elevator Circuits in Hospitals per NEC 517

[DetroitEE]

In the past, we have provided a small 12 circuit panelboard in elevator machine rooms fed from the life safety branch in order to serve the several 120V loads that are required for the elevators (cab lights, controls, cab HVAC, etc.)

However, upon reviewing NEC 517, I have a feeling that how we have been doing this is wrong hmy:

If I'm interpreting the requirements for the Life Safety branch correctly, it looks like the only thing you are permitted to put on this branch that is elevator related is the 120V circuit for cab lighting, controls, communication, and signal systems.

Can any fellow EEs comment on how they typically do elevator 120V circuits in hospitals? Does everyone do separate fused disconnect switches (seems to be the standard) or does anyone else put a small panelboard in the elevator control room?

How about the machine rooms lights and receptacles, as well as the pit lights and receptacles? It looks like those have to be on the normal branch, as I do not see any catagories for the life safety, critical, or equipment branch that would permit those loads.

 

[steve66]

In the past, we have provided a small 12 circuit panelboard in elevator machine rooms fed from the life safety branch in order to serve the several 120V loads that are required for the elevators (cab lights, controls, cab HVAC, etc.)

However, upon reviewing NEC 517, I have a feeling that how we have been doing this is wrong hmy:

If I'm interpreting the requirements for the Life Safety branch correctly, it looks like the only thing you are permitted to put on this branch that is elevator related is the 120V circuit for cab lighting, controls, communication, and signal systems.

Can any fellow EEs comment on how they typically do elevator 120V circuits in hospitals? Does everyone do separate fused disconnect switches (seems to be the standard) or does anyone else put a small panelboard in the elevator control room?

How about the machine rooms lights and receptacles, as well as the pit lights and receptacles? It looks like those have to be on the normal branch, as I do not see any catagories for the life safety, critical, or equipment branch that would permit those loads.

The elevator itself usually just has 2 circuits: the 3 phase supply for the motor, and the 120V supply for the elevator cab. I wouldn't put anything besides the elevator cab on LS. I'm not sure we even put that on LS.