A commercial building requires a 2-inch EMT raceway to carry 20 12AWG THHN conductors. What is the allowable fill of the raceway?

Texas Master exam practice question · Wiring Methods

A commercial building requires a 2-inch EMT raceway to carry 20 12AWG THHN conductors. What is the allowable fill of the raceway?

60% of the raceway area
B70% of the raceway area
C80% of the raceway area
D90% of the raceway area

Exam tip

Remember to consider the fill requirements for both the conduit and the raceway as specified in NEC Article 318.

Why A is correct

According to 2026 NEC Article 318.6, the allowable fill for 12AWG conductors in a 2-inch EMT raceway is 60% of the raceway area. The other options are incorrect as they exceed the fill requirements specified in the NEC.

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A commercial building requires a 2-inch EMT raceway to carry 20 12AWG THHN conductors. What is the allowable fill of the raceway?

A commercial building requires a 2-inch EMT raceway to carry 20 12AWG THHN conductors. What is the allowable fill of the raceway?

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