A public school is to be served by a 400A, 480V, 3-phase feeder. What is the minimum number of overcurrent devices required for this feeder according to 240.4(A)?

Texas Master exam practice question · Feeders

A public school is to be served by a 400A, 480V, 3-phase feeder. What is the minimum number of overcurrent devices required for this feeder according to 240.4(A)?

Exam tip

Always refer to 240.4(A) for the minimum number of overcurrent devices required for feeders.

Why B is correct

According to 240.4(A), a minimum of two overcurrent devices are required for a 400A, 480V, 3-phase feeder. The other options are incorrect as they do not meet the code requirements.

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A public school is to be served by a 400A, 480V, 3-phase feeder. What is the minimum number of overcurrent devices required for this feeder according to 240.4(A)?

A public school is to be served by a 400A, 480V, 3-phase feeder. What is the minimum number of overcurrent devices required for this feeder according to 240.4(A)?

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