Practice question

What is a 'transformer disconnect' in a series roadway lighting circuit?

A manual light switch
A device that automatically bypasses a failed series-connected luminaire transformer to maintain current flow in the series circuit
A connection between two power transformers
A device that measures transformer efficiency

Answer: B — A device that automatically bypasses a failed series-connected luminaire transformer to maintain current flow in the series circuit

The correct answer is shown above. Try the full quiz for additional practice.