The answer to 'do I need circuit breaker' is yes, circuit breakers are an essential safety component in every home's electrical system. Circuit breakers are designed to automatically shut off the flow of electricity when they detect a problem, like a short circuit or overload, preventing electrical fires and damage to your home's wiring and appliances.
Circuit breakers are required by electrical codes and should be installed in your home's main electrical panel, as well as any subpanels. They come in different amperage ratings to handle the electrical load of your home, and it's important to have the right size breakers installed to ensure proper protection.