If a fuse continues to blow, what is the appropriate action?

• A. Replace it with a higher capacity fuse
• B. Inspect the affected equipment to determine the cause
• C. Provide a jumper in the box
• D. Replace it with a fuse of lower capacity

Answer: (B)

When a fuse keeps blowing, it’s signaling that something in the circuit is drawing too much current or there’s a fault somewhere. The fuse’s job is to protect wiring and components by interrupting excess current. So the right next step is to inspect the affected equipment to find the root cause—check for short circuits, damaged wiring, faulty components, or overloads and fix the underlying issue before restoring power.

Replacing the fuse with a higher rating would bypass protection and can lead to overheating or fire. Installing a jumper would bypass the fuse entirely, removing protection. Using a lower-rated fuse would cause nuisance trips without addressing the real fault. The goal is to locate and correct the problem so the circuit can operate safely with the proper protection in place.