Hawaii Administrative Rules
Title 12 - DEPARTMENT OF LABOR AND INDUSTRIAL RELATIONS
Subtitle 8 - HAWAII OCCUPATIONAL SAFETY AND HEALTH DIVISION
Part 11 - ELEVATORS AND RELATED SYSTEMS
Chapter 250 - AMUSEMENT RIDES
Section 12-250-10 - Electrical safety requirements

(a) All electrical wiring, equipment, and apparatus used for amusement rides or for lighting shall be properly and legally installed, operated, and maintained, as required by NFPA 70 and local ordinances.

(b) No employee shall be suffered or permitted to work in such proximity to any part of electrical power circuits that the employee may contact the same in the course of the work unless 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.

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

(d) All electric transformer sub-stations shall be properly enclosed and proper warning signs shall be posted.

(e) 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 or endanger life or property.

(f) Elevated power lines crossing access or other roads within the grounds of the carnival, circus, fair, amusement parks, or other areas where the amusement rides are located shall be so suspended as to provide minimum vertical clearance of 12 feet (3.6 m) from the road surface and minimum horizontal clearance of 3 feet (90 cm) from each side of the normal passage space of vehicles.

(g) Wiring laid on or under surfaces traversed by vehicular or pedestrian traffic shall be adequately protected against wear and abrasion. Buried cables shall be Type UF as required by Article 339 of NFPA 70.

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

(i) All electrical installations shall be properly grounded. All electrical cords shall be of the heavy duty type and shall contain an identifying grounding conductor in addition to the current-carrying conductors. The size of grounding conductor shall comply with Table 250-94 of NFPA 70.

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

(k) Conductors shall be provided with over-current protective devices according to load and current-carrying capacity. No such device shall be installed on neutral or grounding conductors.

(l) Where electrical power is supplied for an amusement ride by a privately operated generating system, the generator and all equipment shall be properly grounded if the system incorporates a ground.

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

(n) Each electrically powered amusement ride shall be effectively grounded. The grounding shall be made effective as to all non-current-carrying metal parts which may become energized and which are exposed to contact by any person.

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