Elevator feeders

[m sleem]

What code says here?....Regarding the elevators which are located in the same core (1 or 2 or 3) do we need to feed each by a separate direct feeder from the LV switchgear panel?..or we can supply one feeder to the elevator machine room (control panel) then feeder for each?
:slaphead:

 

[chris kennedy]

620.13(D) Conductors Supplying More Than One Motor, Motor Controller, or Power Transformer.
Conductors supplying more than one motor, motor controller, or power transformer shall have an ampacity not less than the sum of the nameplate current ratings of the equipment plus all other connected loads. The ampere ratings of motors to be used in the summation shall be determined from Table 430.22(E), 430.24 and 430.24, Exception No. 1.
FPN: See Annex D, Example Nos. D9 and D10.

See 620.14 for permitted feeder demand factors.

 

[m sleem]

so it means we can feed more than elevator by a common feeder by

taking into consideration the demand factors.

 

[chris kennedy]

Sort of, it means you can use a common feeder for multiple elevators and you 'allowed to' apply the demand factor.