Raceways on exterior surfaces of buildings shall be _____ and arranged to drain.

• A. Suitable for use in wet conditions
• B. Protected by locks at all times
• C. Made only of metal
• D. Placed underground only

Answer: (A)

Raceways on building exteriors must withstand wet conditions and be arranged to drain because outdoor exposure brings rain and humidity. Being suitable for wet locations ensures the raceway, fittings, and seals resist moisture so water doesn’t penetrate and compromise insulation or cause corrosion. Arranging them to drain prevents any water that gets in from pooling, which protects the conductors and reduces electrical hazards. The other ideas don’t address moisture exposure or drainage, which are the essential considerations for exterior installations.