1.1 These requirements cover metal-sheathed heating elements intended for use in appliances and equipment that comply with the requirements for such appliances and equipment.
1.2 i The main body of this standard covers requirements for sheathed heating elements rated 600 volts or less. Supplement SA covers cartridge-type sheathed heating elements that do not incorporate a bend in the sheath, rated between 601 and 15,000 V.
