All electrical wiring, equipment and apparatus used for amusement devices or for lighting shall be installed, operated and maintained in compliance with this Part (rule), Industrial Code Rule 57 High–Voltage Proximity, and the National Fire Protection, National Electrical Code, NFPA 70-1999 (NEC–1999). Where there are conflicts between these regulations this Part (rule) shall take precident. The provisions of Code Rule 57 shall take precedent over the NEC–1999.

The NEC–1999 shall not apply to amusement devices manufactured prior to the effective date of this standard if compliance would require a major modification of the device.

No employee shall be suffered or permitted to work in such proximity to any part of an electric power circuit that he may contact the same in the course of his work unless he is protected against shock by de-energizing the circuit, grounding it, or guarding it by effective insulation. If protection is supplied by de-energizing the circuit, the switch controlling the circuit shall be locked out to prevent inadvertent closing.

The outlets of electric power lines carrying more than 120 volts shall be clearly marked to show their voltage.

All electrical transformer substations shall be properly enclosed and proper warning signs shall be posted.

Electrical apparatus and wiring located outdoors shall be of such quality and so constructed or protected that exposure to weather will not interfere with its normal operation.

Elevated power lines crossing access or other roads within the grounds of a carnival, fair or amusement park shall be so suspended as to provide minimum vertical clearance of 12 feet from the road surface and minimum horizontal clearance of three feet on each side of the normal passage space of vehicles.

Temporary electric wiring, if suspended, shall be so supported that its protective insulation will not be damaged.

Temporary electric installations shall be properly grounded.

Bare wires and other uninsulated current-carrying parts shall be guarded against inadvertent contact by means of proper location or by a fence or other barrier.

Conductors shall be provided with overcurrent protective devices according to load. No such device shall be installed in neutral or grounding conductors.

Where electrical power is supplied for an amusement device or a temporary structure by a privately operated generating system, the generator and all equipment shall be grounded as required by NEC–1999.

All receptacles and attachment caps shall be of the grounding type.

Each electrically powered amusement device shall be effectively grounded. The grounding shall be made effective as to all noncurrent-carrying metal parts which may become energized and which are exposed to contact by any person. An effective ground shall be one having a resistance of 25 ohms or less.

Wiring laid on surfaces traversed by vehicular or pedestrian traffic shall be adequately protected against wear and abrasion.

Each electrically operated amusement device not designed to be controlled directly by the passenger shall be provided with a disconnect power switch placed within easy reach of the operator.