WAC 296-800-28020. Make sure electrical equipment that is not marked is not used

(1) Electric equipment may not be used unless the following markings have been placed on the equipment: (a) The manufacturer's name, trademark, or other descriptive marking by which the organization responsible for the product may be identified; and (b) Voltage, current and wattage, or other ratings as necessary. (2) You must make sure markings are durable and appropriate to the environment.