I. General.
522.1 Scope. This article covers the installation of control circuit power sources and control circuit conductors for electrical equipment, including associated control wiring in or on all structures, that are an integral part of a permanent amusement attraction.
522.2 Definitions.
Control Circuit. For the purposes of this article, the circuit of a control system that carries the electrical signals directing the performance of the controller but does not carry the main power current.
Entertainment Device. A mechanical or lectromechanical device that provides an entertainment experience.
FPN: These devices may include animated props, show action equipment, animated figures, and special effects, coordinated with audio and lighting to provide an entertainment experience.
Permanent Amusement Attraction. Ride devices, entertainment devices, or combination thereof, that are installed so that portability or relocation is impracticable.
Ride Device. A device or combination of devices that carry, convey, or direct a person(s) over or through a fixed or restricted course within a defined area for the primary purpose of amusement or entertainment.
522.3 Other Articles. Wherever the requirements of other articles of this Code and Article 522 differ, the requirements of Article 522 shall apply.
522.5 Voltage Limitations. Control voltage shall be a maximum of 150 volts, nominal, ac to ground or 300 volts dc to ground.
522.7 Maintenance. The conditions of maintenance and supervision shall ensure that only qualified persons service the permanent amusement attraction.
II. Control Circuits.
522.10 Power Sources for Control Circuits.
(A) Power-Limited Control Circuits. Power-limited con trol circuits shall be supplied from a source that has a rated output of not more than 30 volts and 1000 volt- amperes.
(1) Control Transformers. Transformers used to supply power-limited control circuits shall comply with the applicable sections within Parts I and II of Article 450.
(2) Other Power-Limited Control Power Sources. Power-limited control power sources, other than transformers, shall be protected by overcurrent devices rated at not more than 167 percent of the volt-ampere rating of the source divided by the rated voltage. The fusible overcurrent devices shall not be interchangeable with fusible overcurrent devices of higher ratings. The overcurrent device shall be permitted to be an integral part of the power source.
To comply with the 1000 volt-ampere limitation of
522.10(A), the maximum output of power sources,
other than transformers, shall be limited to 2500 volt-
amperes, and the product of the maximum current and
maximum voltage shall not exceed 10,000 volt-amperes.
These ratings shall be determined with any overcurrent-
protective device bypassed.
(B) Non-Power-Limited Control Circuits. Non-power- limited control circuits shall not exceed 300 volts. The power output of the source shall not be required to be limited.
(1) Control Transformers. Transformers used to supply non-power-limited control circuits shall comply with the applicable sections within Parts I and II of Article
450.