Replace 240v Circuit Breaker

To change a circuit breaker find the main circuit breaker box and locate the defective breaker by looking for a tripped breaker.

Replace 240v circuit breaker.

Next turn off the branch breaker boxes the main power and the individual breakers. Circuit breakers can simply be reset. Replacing a circuit breaker appears somewhat intimidating. Run the cabling from your 240v circuit to the location of your breaker box.

A 3 wire 240 volt circuit has two hot wires each supplying 120 volts for a total of 240 and an equipment ground wire. A 120 volt circuit has only one hot wire connected to the breaker plus a neutral wire connected to the neutral bus bar in the service panel. For safety the worker first shuts off the main circuit breaker and tests for voltage before touching any wires or wire connections. Should one of the switches fail an electrician can replace it for approximately 120 200 depending on the region.

Remove the screws holding the circuit panel s face plate then loosen the screws holding the wires on the defective breaker. This is the basic process electricians follow to replace a 120 volt or 240 volt circuit breaker in a household electrical system. A circuit breaker panel is essentially a big switch made up of smaller switches that correspond to certain electrical zones in a building.