Which action should occur after confirming a faulty fuse?

After confirming a faulty fuse, the most appropriate action is to replace the bad fuses. The fuse serves as a protective device designed to break the circuit when there is an overload or fault condition. By replacing the fuse, you restore the circuit’s function while ensuring protection against potential hazards. This step is critical to maintaining the integrity of the system as it allows the circuits to operate effectively once again.

While testing all related circuitry can also be important to determine the cause of the fuse failure, it is common practice to replace the fuse first before performing further diagnostics. This approach allows for re-establishing normal operations and monitoring whether the replacement fuse blows again, indicating an underlying issue in the circuit that may need to be addressed.

Redesigning the electrical setup or increasing the current supply may not be appropriate actions immediately after identifying a faulty fuse, as they could lead to further complications or safety hazards without first analyzing the specific cause of the failure.