What are the necessary steps for properly wiring a 20 amp breaker in a residential electrical system?

To properly wire a 20 amp breaker in a residential electrical system, follow these steps:

1. Turn off the main power supply to the circuit.
2. Choose the appropriate wire size for a 20 amp circuit (typically 12-gauge wire).
3. Connect the wire to the breaker terminal and the neutral bus bar in the electrical panel.
4. Install the breaker in the panel and secure it properly.
5. Connect the other end of the wire to the outlet or device you are powering.
6. Test the circuit to ensure it is working correctly and safely.