NM Residential Electrical Inspector Practice Questions - New Mexico CID Residential Electrical Inspector Examination Exam

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Per NEC 2020 Article 411, lighting systems operating at 30 volts or less shall be listed, the output circuits shall be supplied from a listed Class 2 power source or a listed isolating-type transformer, and exposed bare conductors and current-carrying parts shall be limited as specified. Which installation is acceptable?

A listed low-voltage landscape lighting system supplied by its listed Class 2 power supply, installed per the listing A homemade 24-volt lighting circuit tapped from a doorbell transformer that is not part of a listed lighting system 120-volt conductors landed directly on 12-volt lamps An unlisted power supply mounted in a wet location with no listing mark

Correct Answer:

A listed low-voltage landscape lighting system supplied by its listed Class 2 power supply, installed per the listing

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