NM CID EL-1 Practice Questions - New Mexico CID EL-1 Electrical Distribution Systems, Including Transmission Lines Examination Exam

NEC 2020 490.22 requires a means to isolate over-1000 V circuit-interrupting devices so that:

the device can be maintained without it being connected to an energized circuit, unless the device is removable or withdrawable fuses can never be used above 600 V the isolating means must be a wood stick only isolation is required only on 120 V control circuits

Correct Answer:

the device can be maintained without it being connected to an energized circuit, unless the device is removable or withdrawable

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