Compilation of Rules and Regulations of the State of Georgia › Department 120 - OFFICE OF COMMISSIONER OF INSURANCE, SAFETY FIRE COMMISSIONER AND INDUSTRIAL LOAN COMMISSIONER › Chapter 120-3 - RULES OF SAFETY FIRE COMMISSIONER › Subject 120-3-28 - RULES AND REGULATIONS FOR CARNIVAL RIDES › Rule 120-3-28-.20 - Electrical

Current through Rules and Regulations filed through June 27, 2024
Electrical conductors and electrical equipment installed and
				  utilized on or around carnival rides shall conform to the latest adopted
				  edition of National Electrical Code, NFPA 70. The following rules are stated
				  for emphasis and clarification and are supplement to the National Code. If any
				  conflict exists or appears to exist, the National Code shall have
				  precedence.
(a) Installation. Portable
				electrical systems required by amusement rides shall be installed by a
				qualified electrician.
(b)
				Grounding. A carnival shall not operate until all grounding electrodes,
				equipment, and safety grounding connections are secured, polarized, and tested.
				The grounding conductors shall conform to the National Electrical Code, as
				revised. Article 250 Grounding, Paragraph 250-94 Alternating Current Systems
				and 250-95 Size of Equipment Grounding Conductors. The path to ground from
				circuits, equipment and conductor enclosures shall (1) be permanent and
				continuous and (2) shall have ample carrying capacity to conduct currents
				liable to be imposed on it, and (3) shall have impedance sufficiently low to
				limit the potential ground and to facilitate the operation of the over-current
				devices in the circuit.
1. Service Ground.
				Equipment or generators operating from a separate supply or supplies which are
				located closer than 8 feet and all service equipment within itself shall be
				bonded together. The service ground shall be established by connecting the
				grounding conductor to the service entrance neutral bar in the hot truck or
				generator and to an approved type service grounding electrode such as ground
				rods. A sufficient number of ground rods shall be spaced not less than 6 feet
				apart and at secure depth to obtain and maintain 25 ohms or less resistance to
				ground. A resistance of 3 ohms or less shall exist when grounding to a water
				system.
2. Generator Grounding.
				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 incorporated a ground.
3. Circuit and Equipment Safety. From the
				service entrance neutral bar, the circuit grounded and equipment safety
				grounding conductors shall be continuous and separate throughout the entire
				system. The portable outlet and terminal boxes shall contain a service ground
				through grounded receptacles for both circuit and safety. The equipment safety
				grounding conductors shall be attached to each ride such that a grounding
				resistance of 25 ohms or less is obtained. Separate steel tracks or steel
				framework, such as relief coaster tracks or big slides, shall have grounding
				the same as the service equipment.