Electrical Wiring Circuit Breaker Size

By | January 17, 2023



Circuit breakers are an important part of any electrical wiring system. They are designed to protect the wiring from being overloaded and prevent fires from occurring. It is important to know the correct size of circuit breaker to use for your wiring project, as undersized or oversized breakers can be dangerous.

The first step in determining the correct circuit breaker size for a wiring project is to calculate the total current draw of the circuit. This requires adding up the amp ratings of all the devices that will be connected to the circuit. Once the total current draw is determined, the next step is to consult the National Electrical Code (NEC) to determine the minimum breaker size required. The NEC provides guidelines for the proper breaker size based on the total current draw of the circuit.

When selecting the right circuit breaker size, it is important to remember that a breaker should always be selected that is larger than the total current draw of the circuit. This ensures that the breaker will trip before the overload causes damage or a fire. It is also important to use a circuit breaker that is designed to handle the voltage requirements of the wiring system. Following these steps will help ensure that the wiring project is done safely and correctly.

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