Elevator Controls and Signals on Emergency for High Rise

[mshields]

I believe that Elevator Controls and Signals for an elevator in a high rise needed to be on the Emergency branch; unlike the elevator itself which should be on Legally Required. But I'm having a hard time finding where the requirement is. If anyone knows off the top of their head...

Thanks,

Mike

 

[DrSparks]

I believe that Elevator Controls and Signals for an elevator in a high rise needed to be on the Emergency branch; unlike the elevator itself which should be on Legally Required. But I'm having a hard time finding where the requirement is. If anyone knows off the top of their head...

Thanks,

Mike

620.91 Emergency and Standby Power Systems. An elevator(s) shall be permitted to be powered by an emergency or standby power system.

Informational Note:  See ASME A17.1-2010/CSA B44-10, Safety Code for Elevators and Escalators, 2.27.2, for additional information.

Looks like it permits it but not requires. IN refers to another standard though. There may also be requirements in life safety code.

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[DrSparks]

The reason is elevator contractors are a completely separate trade and they have their own code. The NEC is only concerned with the electrical safety.

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[mshields]

And I am aware that this is strictly speaking an NEC forum. BUT....

Chapter 4 of the IBC makes it clear that the elevator itself in a high rise should be legally required standby. Also clear is that the cab lights need to be on Emergency (article 700). I thought there was a similar requirement for controls and signaling systems for an elevator in a high rise that required those, like the cab lights, to be on Emergency j(Article 700.

 

[DrSparks]

And I am aware that this is strictly speaking an NEC forum. BUT....

Chapter 4 of the IBC makes it clear that the elevator itself in a high rise should be legally required standby. Also clear is that the cab lights need to be on Emergency (article 700). I thought there was a similar requirement for controls and signaling systems for an elevator in a high rise that required those, like the cab lights, to be on Emergency j(Article 700.

I believe you're correct. The fire department must be able to use the fire controls and that would presumably need to be on the emergency branch, which is designed to survive the longest in a fire.

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[viciedoconsulting]

On a related subject, I need to find a 1999 UBC Code reference as to when an elevator would be required to be on emergency power. Does anyone happen to know what UBC section would apply back in 1999? Any assistance is greatly appreciated...

 

[steve66]

The EC normally hits the elevator with 2 circuits - one main circuit for the elevator itself and one smaller circuit for the car lights and vent fan.

So I'm not sure how you would be able to divide the main elevator circuit in order to supply it from two different ATS's.

It needs to be landed on one disconnect, and there is probably only one termination location for it in the elevator controller.