Standard Circuit Breaker Sizes Australia

By | October 6, 2022



The standard circuit breaker sizes in Australia can be confusing, especially if you’re a first-time homeowner or a novice in the electrical industry. It’s important to understand the standard circuit breaker sizes so that you can properly protect your home and family from electrical hazards. In this article, we’ll explore the standard circuit breaker sizes in Australia and how to choose the right breaker for your home.

When it comes to circuit breakers, size matters. The size of the breaker must match the size of the circuit, and it’s important to ensure that the breaker is suited to the load of the circuit. This means that if the current on the circuit is too high, the breaker will trip, preventing an electrical overload and protecting the wiring and appliances connected to it. The standard circuit breaker sizes in Australia are 10A, 15A, 20A, 25A, and 32A.

It’s important to select the right size breaker for your home or business. If you select a breaker that’s too small, it may not trip when it should, putting your appliances and wiring at risk. If you select a breaker that’s too large, it may trip more often than needed, reducing the lifespan of the breaker. To make sure that you select the right size breaker, you need to calculate the total wattage of the devices connected to the circuit. This can be done by multiplying the voltage by the amperage of the device. Once you have the total wattage of the circuit, you can select the appropriate breaker size.

Choosing the right breaker size can be a difficult task, but it’s essential for the safety of your home and family. Make sure to always consult with a qualified electrician before selecting or replacing your circuit breaker to ensure that you make the right choice. With the right knowledge and the right breaker, you can ensure the safety of your home.


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