NCCER Electrical Level 2 Practice Exam 2025 - Free NCCER Electrical Practice Questions and Study Guide

Question: 1 / 400

When is it appropriate to use a circuit breaker instead of a fuse?

When you need to protect against short circuits

When resetting after an overload is required

Using a circuit breaker is particularly beneficial in scenarios where resetting after an overload is required. Circuit breakers are designed to interrupt the flow of electricity automatically when they detect conditions that could lead to overheating or equipment damage, such as overloads or short circuits. One key advantage of circuit breakers over fuses is that once a breaker trips, it can be easily reset with the flip of a switch, allowing the circuit to resume operation without the need for replacement parts, which is necessary when a fuse blows. This reset capability makes circuit breakers more practical in applications where frequent interruptions must be managed quickly and efficiently, enhancing convenience and reducing downtime in electrical systems.

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When the load is constant

When circuits are not frequently overloaded

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