Question

The type of EMT couplings and connectors that must be used on the exterior of buildings are:

A) set screw type
B) rain-tight
C) concrete-tight
D) all of the above
E) only A and C apply

Answer 1

EMT couplings and connectors for exterior building use must be rain-tight to protect against moisture and weather conditions.

Step-by-step explanation:

The type of EMT couplings and connectors that must be used on the exterior of buildings are rain-tight. When installing electrical systems outside, they must protect against moisture and various weather conditions, which is why rain-tight fittings are required. Set-screw type or concrete-tight connectors are not specifically designed for exterior use where they would be exposed to rain or moisture.