What is the appropriate circuit breaker rating for lighting track that is rated for 20 amps at 125 volts?
The correct answer is C. II only. Given the 20-amp rating of the lighting track, a corresponding 20-amp single pole breaker would be appropriate.
Explanation:
The question is about the appropriate circuit breaker rating for a lighting track that requires a 20-amp, 125-volt supply. Each 10' section of lighting track is rated for 20 amps at 125 volts, meaning the maximum current it can handle safely is 20 amps. To prevent overloading, a circuit breaker matching or exceeding the track's amperage rating is needed. In this case, a 20-amp single pole breaker is the best choice for the circuit supplying the lighting track, hence the answer is II only.
To elaborate further, a circuit breaker is designed to automatically cut off the flow of electricity when there is an overload, short circuit, or other electrical fault to protect the circuit from damage. In this scenario, the 20-amp single pole breaker is capable of handling the maximum current the lighting track can draw, providing the necessary protection for the electrical system.
Selecting the correct circuit breaker rating is crucial to ensure the safety and proper functioning of the electrical circuit. Using a breaker with a lower rating may lead to frequent tripping due to overcurrent, while using one with a higher rating could pose a safety risk in case of a fault.
In summary, when determining the circuit breaker rating for a lighting track rated for 20 amps at 125 volts, a 20-amp single pole breaker is the suitable choice to ensure safe and reliable operation of the electrical system.