(1) Deteriorating agents.

(a) Unless identified for use in the operating environment, you must not locate any conductors or equipment:

(i) In damp or wet locations;

(ii) Where exposed to gases, fumes, vapors, liquids, or other agents having a deteriorating effect on the conductors or equipment; or

(iii) Where exposed to excessive temperatures.

(b) You must protect control equipment, utilization equipment, and busways approved for use in dry locations only against damage from the weather during building construction.

(2) Protection against corrosion. Metal raceways, cable armor, boxes, cable sheathing, cabinets, elbows, couplings, fittings, supports, and support hardware must be of materials appropriate for the environment in which they are to be installed.