680.74(A) General.
The following parts shall be bonded together:
- (1)
All metal fittings within or attached to the tub structure that are in contact with the circulating water
- (2)
Metal parts of electrical equipment associated with the tub water circulating system, including pump and blower motors
- (3)
Metal-sheathed cables, metal raceways, and metal piping within 1.5 m (5 ft) of the inside walls of the tub and not separated from the tub by a permanent barrier
- (4)
All exposed metal surfaces that are within 1.5 m (5 ft) of the inside walls of the tub and not separated from the tub area by a permanent barrier
- (5)
Non–current-carrying metal parts of electrical devices and controls that are not associated with the hydromassage tubs within 1.5 m (5 ft) from such units
Exception No. 1: Small conductive surfaces not likely to become energized, such as air and water jets, supply valve assemblies, and drain fittings not connected to metallic piping, and towel bars, mirror frames, and similar nonelectrical equipment not connected to metal framing shall not be required to be bonded.
Exception No. 2: Double-insulated motors and blowers shall not be bonded.