Definitions contained in the current adopted edition National Electrical Code (NEC), and the following definitions apply to the commercial coach electrical standards in this chapter.

"Converter" is a device that changes electrical energy from one form to another, as from alternating current to direct current.

"Feeder assembly" or "subpanel" is the overhead or under-chassis feeder conductor, including the grounding conductor, fittings, and equipment, or power-supply cord approved for commercial coach.

The feeder assembly or subpanel is used in commercial coaches and designed to deliver energy from the source of electrical supply to the distribution panelboard within the commercial coach.

"Low voltage" is an electromotive force rated at thirty-two volts or less, supplied from a transformer, converter, or battery.