Ventilation Dis connecting Means. Elevators shall have a single means for disconnecting all ungrounded car light, receptacle(s), and ventilation power-supply conductors for that elevator car.

The disconnecting means shall be an enclosed externally operable fused motor circuit switch or circuit breaker capable of being locked in the open position and shall be located in the machine room or control room for that elevator car. The provision for locking or adding a lock to the disconnecting means shall be installed on or at the switch or circuit breaker used as the 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 as the means required to be installed at and remain with the equipment. Where there is no machine room or control room, the disconnecting means shall be located in a machinery space or control space outside the hoistway that is readily accessible to only qualified persons.
Disconnecting means shall be numbered to correspond to the identifying number of the elevator car whose light source they control.
The disconnecting means shall be provided with a sign to identify the location of the supply side overcurrent protective device.

620.54 Heating and Air-Conditioning Disconnecting Means. Elevators shall have a single means for disconnecting all ungrounded car heating and air- conditioning power-supply conductors for that elevator car.

The disconnecting means shall be an enclosed exter- nally operable fused motor circuit switch or circuit breaker capable of being locked in the open position and shall be located in the machine room or control room for that elevator car. The provision for locking or adding a lock to the disconnecting means shall be installed on or at the switch or circuit breaker used as the 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 as the means required to be installed at and remain with the equipment. Where there is no ma- chine room or control room, the disconnecting means shall be located in a machinery space or control space outside the hoistway that is readily accessible to only qualified persons.
Where there is equipment for more than one elevator car in the machine room, the disconnecting
means shall be numbered to correspond to the identifying number of the elevator car whose heating and air-conditioning source they control.
The disconnecting means shall be provided with a sign to identify the location of the supply side overcurrent protective device.
620.55 Utilization Equipment Disconnecting Means. Each branch circuit for other utilization equipment
shall have a single means for disconnecting all
ungrounded conductors. The disconnecting means
shall be capable of being locked in the open position
and shall be located in the machine room or control
room/machine space or control space. The provision
for locking or adding a lock to the disconnecting means
shall be installed on or at the switch or circuit breaker
used as the disconnecting means and shall remain