A domestic circuit contains a $30\ \text{A}$ fuse. Its purpose is to safeguard the wiring when the current in the circuit becomes too large. In which wire is the $30\ \text{A}$ fuse placed, and what happens when it works?
- Alive wire; disconnects the circuit
- Blive wire; reduces the current to $30\ \text{A}$
- Cneutral wire; disconnects the circuit
- Dneutral wire; reduces the current to $30\ \text{A}$