WAC 296-56-60159. Brakes

Employers must equip all elevators with brakes designed to engage mechanically and release electrically. (1) Brakes must be located on the final drive of all elevator machines. (2) The brake actuating circuit must be so designed that interruption of power by slack cable switch, control switch, and limit switches actuate the brake. (3) The brakes must actuate under short circuit, phase failure, or reverse phase conditions.