A healthcare facility has a 480V, 3-phase, 100A motor for a life support system. What is the minimum conductor size required for this motor circuit?

Texas Master exam practice question · Branch Circuit Conductors

A healthcare facility has a 480V, 3-phase, 100A motor for a life support system. What is the minimum conductor size required for this motor circuit?

A6 AWG
8 AWG
C10 AWG
D12 AWG

Exam tip

Special equipment such as life support systems often have specific code requirements for conductor sizing to ensure safety and reliability.

Why B is correct

According to 2026 NEC Article 680.41(A), the minimum conductor size for a 480V, 3-phase motor circuit for a life support system is 8 AWG. Larger conductors are not required for this application.

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A healthcare facility has a 480V, 3-phase, 100A motor for a life support system. What is the minimum conductor size required for this motor circuit?

A healthcare facility has a 480V, 3-phase, 100A motor for a life support system. What is the minimum conductor size required for this motor circuit?

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