4 Va. Admin. Code § 25-40-2280
Electric motors, switches, and controls exposed to damaging dust or water shall be of dust tight or watertight construction.
§§ 45.1-161.3, 45.1-161.294 and 45.1-161.305 of the Code of Virginia.
Derived from VR480-05-1.2 § 12.27, eff. July 19, 1989; amended, Virginia Register Volume 14, Issue 17, eff. July 1, 1998.