disconnecting means and shall remain in place with or without the lock installed. Portable means for adding a lock to the switch or circuit breaker shall not be permitted.
Driving machines or motion and operation controllers not within sight of the disconnecting means shall be provided with a manually operated switch installed in the control circuit to prevent starting. The manually operated switch(es) shall be installed adjacent to this equipment.
Where the driving machine of an electric elevator or the hydraulic machine of a hydraulic elevator is located in a remote machine room or remote machinery space, a single means for disconnecting all ungrounded
main power-supply conductors shall be provided and be capable of being locked in the open position.
(2) On Elevators with Generator Field Control. On el evators with generator field control, the disconnecting means shall be located within sight of the motor controller for the driving motor of the motor- generator set. Driving machines, motor-generator sets, or motion and operation controllers not within sight of the disconnecting means shall be provided with a manually operated switch installed in the control circuit to prevent starting. The manually operated switch(es) shall be installed adjacent to this equipment.
Where the driving machine or the motor-generator set is located in a remote machine room or remote machinery space, a single means for disconnecting all ungrounded main power-supply conductors shall be provided and be capable of being locked in the open position.
(3) On Escalators and Moving Walks. On escalators and moving walks, the disconnecting means shall be installed in the space where the controller is located.
(4) On Platform Lifts and Stairway Chairlifts. On plat- form lifts and stairway chairlifts, the disconnecting means shall be located within sight of the motor controller.
(D) Identification and Signs. Where there is more than one driving machine in a machine room, the disconnecting means shall be numbered to correspond to the identifying number of the driving machine that they control.
The disconnecting means shall be provided with a sign to identify the location of the supply side overcurrent protective device.
620.52 Power from More Than One Source.
(A) Single-Car and Multicar Installations. On single-car and multicar installations, equipment receiving electrical power from more than one source shall be provided with a disconnecting means for each source of electrical power. The disconnecting means shall be within sight of the equipment served.
(B) Warning Sign for Multiple Disconnecting Means.
Where multiple disconnecting means are used and parts of the controllers remain energized from a source other than the one disconnected, a warning sign shall be mounted on or next to the disconnecting means. The sign shall be clearly legible and shall read as follows:
WARNING PARTS OF THE CONTROLLER ARE NOT DE-ENERGIZED BY THIS SWITCH.
(C) Interconnection Multicar Controllers. Where inter connections between controllers are necessary for the
operation of the system on multicar installations that remain energized from a source other than the one disconnected, a warning sign in accordance with
620.52(B) shall be mounted on or next to the disconnecting means.