What will happen if a mechanic replaces a blown 10-Amp main fuse with a 30-Amp fuse to prevent it from blowing again?

1. The fuse will fail to protect the circuit, and any short circuit could cause the wiring harness to overheat, melt, or catch fire.
2. The electrical components will operate faster and with higher efficiency due to increased current.
3. The battery will charge three times faster because of the increased amperage rating.
4. Nothing, this is a standard industry practice when troubleshooting electrical overloads.