An outdoor lighting system requires a 15A branch circuit. What is the minimum conductor size required for this circuit, considering it is installed outdoors?

Texas Master exam practice question · Branch Circuit Conductors

An outdoor lighting system requires a 15A branch circuit. What is the minimum conductor size required for this circuit, considering it is installed outdoors?

12 AWG
B14 AWG
C16 AWG
D18 AWG

Exam tip

Outdoor installations often have specific conductor size requirements to protect against environmental factors such as moisture and temperature.

Why A is correct

According to 2026 NEC Article 310.15(B)(16), the minimum conductor size for a 15A branch circuit installed outdoors is 12 AWG. Larger conductors are not required for this application.

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An outdoor lighting system requires a 15A branch circuit. What is the minimum conductor size required for this circuit, considering it is installed outdoors?

An outdoor lighting system requires a 15A branch circuit. What is the minimum conductor size required for this circuit, considering it is installed outdoors?

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