A. Where no standards have been adopted for any such materials, devices or appliances, the chief electrical inspector may require that such materials, devices or appliances be submitted to a testing laboratory or laboratories deemed qualified by him for testing same.

B. Upon receipt of a report from such laboratory or laboratories, he may designate a standard for each such article submitted and tested, which designation shall be in writing and shall be adopted and promulgated as a rule or regulation in the manner provided in this chapter.

C. Any such standards so prescribed shall be designated to provide as a minimum the degree of safety to life and property as is required by the standards hereby adopted for materials, devices or appliances of similar or related character or nature. (Prior code § 7.22.070)