Elevator work

[brother]

I am curious about elevator pit lighting work. It was my understanding that the lights in the pit/shaft had to be also fed from an emergency source, (battery or epower). Is this not true? I could not find it in the NEC, 2017 version.

Also, on the side of safety, isn't the elevator supposed to be secured on stop posts for safety when people are working in the pit, and not just a lockout/tag out on the breaker?

I have heard of these elevators moving/falling even without power. ie... hydrolics , frayed cables etc..

 

[jerryalan]

LOTO procedures require that all forms of energy be secured, i wouldn't rely on cables or hydraulics to secure a load overhead in any circumstance.

 

[infinity]

I am curious about elevator pit lighting work. It was my understanding that the lights in the pit/shaft had to be also fed from an emergency source, (battery or epower). Is this not true? I could not find it in the NEC, 2017 version.

I see nothing in the 2017 NEC requiring an EM circuit.

620.24 Branch Circuit for Hoistway Pit Lighting and Receptacles.
(A) Separate Branch Circuits. Separate branch circuits shall
supply the hoistway pit lighting and receptacles.
Required lighting shall not be connected to the load side of
a ground-fault circuit interrupter.
(B) Lighting Switch. The lighting switch shall be so located as
to be readily accessible from the pit access door.
(C) Duplex Receptacle. At least one 125-volt, single-phase, 15-
or 20-ampere duplex receptacle shall be provided in the hoist‐
way pit.

 

[roger]

I am curious about elevator pit lighting work. It was my understanding that the lights in the pit/shaft had to be also fed from an emergency source, (battery or epower). Is this not true? I could not find it in the NEC, 2017 version.

Also, on the side of safety, isn't the elevator supposed to be secured on stop posts for safety when people are working in the pit, and not just a lockout/tag out on the breaker?

I have heard of these elevators moving/falling even without power. ie... hydrolics , frayed cables etc..

There is no NEC requirement however ASME 17.1 may have something.

Roger

 

[MAC702]

...Also, on the side of safety, isn't the elevator supposed to be secured on stop posts for safety when people are working in the pit, and not just a lockout/tag out on the breaker?

I have heard of these elevators moving/falling even without power. ie... hydrolics , frayed cables etc..

Not all work under the car is in the pit. I'd have to believe there are other ways to securely lock the car in position. But I've worked on one elevator installation in my entire life, so I'm just guessing.