This section and §§ 39.81 and 39.83-39.90 are specificially directed to electrical equipment of indoor and outdoor stations and substations, and to similar equipment, including generators, motors, storage batteries, transformers, and lightning arresters, when installed in factories, mercantile establishments, vehicles, or elsewhere, if the equipment is in separate rooms or enclosures, under control of properly qualified persons, if the interiors of such rooms or enclosures are accessible only to such persons.
34 Pa. Code § 39.82
This section cited in 34 Pa. Code § 39.81 (relating to applicability); 34 Pa. Code § 39.83 (relating to modification or waiver of provisions); and 34 Pa. Code § 39.192 (relating to scope).