Services & DistributionQuestion 81 of 521
Which type of surge-protective device is permitted to be connected on the line side of the service overcurrent device (service disconnect)?
a.Type 3
b.Type 4
c.Type 1
d.Type 2
Explanation
Per Article 242, a Type 1 SPD is permitted to be connected on the line side of the service disconnect overcurrent device. Type 2 devices are connected on the load side of the service disconnect, and Type 3 are point-of-utilization devices installed near equipment.
Law Reference: 2023 NEC §242.14Practice all 521 questions free — no signup required.
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