Remote parts of a sign or outline lighting system supplied by class two power supply are required to be bonded to an equipment grounding conductor of the branch circuit supplying the system.

Prepare for the Electrical Code 3 Exam. Practice with flashcards and multiple-choice questions, each with hints and explanations. Get ready and pass your exam!

Multiple Choice

Remote parts of a sign or outline lighting system supplied by class two power supply are required to be bonded to an equipment grounding conductor of the branch circuit supplying the system.

Class 2 power supplies create a limited-energy, isolated low-voltage circuit for remote sign parts. Because the low-voltage side is electrically separated from the building’s branch-circuit wiring, there isn’t a fault path back to the branch circuit’s equipment grounding conductor through the remote sign. As a result, bonding the remote parts to the branch-circuit equipment grounding conductor isn’t required. Any grounding requirements would follow the supply’s own installation instructions or general bonding rules for the enclosure, not a mandatory bond to the branch-circuit ground.

Class 2 power supplies create a limited-energy, isolated low-voltage circuit for remote sign parts. Because the low-voltage side is electrically separated from the building’s branch-circuit wiring, there isn’t a fault path back to the branch circuit’s equipment grounding conductor through the remote sign. As a result, bonding the remote parts to the branch-circuit equipment grounding conductor isn’t required. Any grounding requirements would follow the supply’s own installation instructions or general bonding rules for the enclosure, not a mandatory bond to the branch-circuit ground.

More practice questions