Lighting contactors are not horsepower-rated or categorized by NEMA size but are designed by all of the following ampere ratings except; 20A, 30A, 15A, 60A?

Prepare for the NCCER Control Systems exam with our targeted flashcards and multiple choice questions. Each question is equipped with helpful hints and detailed explanations. Get ready to ace your test!

Multiple Choice

Lighting contactors are not horsepower-rated or categorized by NEMA size but are designed by all of the following ampere ratings except; 20A, 30A, 15A, 60A?

Explanation:
Lighting contactors are sized by the maximum current they can carry, not by horsepower or NEMA size. In practice they’re offered in ampere ratings like 20A, 30A, and 60A to match typical lighting loads and handle inrush currents. A 15A rating isn’t used for lighting contactors because it would be too small for many lighting installations and wouldn’t provide a practical margin for inrush and continuous load. So the rating that doesn’t fit among common lighting contactor options is 15A.

Lighting contactors are sized by the maximum current they can carry, not by horsepower or NEMA size. In practice they’re offered in ampere ratings like 20A, 30A, and 60A to match typical lighting loads and handle inrush currents. A 15A rating isn’t used for lighting contactors because it would be too small for many lighting installations and wouldn’t provide a practical margin for inrush and continuous load. So the rating that doesn’t fit among common lighting contactor options is 15A.

Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy