*Question G0B03:
Which size of fuse or circuit breaker would be appropriate to use with a circuit that uses AWG number 14 wiring?*  

*Correct Answer is  D: 15 amperes*  

### AI Response: (may contain errors)  

To determine the appropriate size of fuse or circuit breaker for a circuit using AWG number 14 wiring, we refer to the National Electrical Code (NEC) guidelines. 

1. **Correct Answer: 15 amperes**
   - AWG number 14 wire is rated for a maximum current of 15 amperes for general use. This rating ensures that the wire can safely carry the current without overheating, which could lead to insulation damage or fire hazards. Therefore, a 15-amp fuse or circuit breaker is appropriate to protect the circuit.

2. **Why the other choices are incorrect:**
   - **30 amperes (Choice A)**: This is too high for AWG 14 wire. Using a 30-amp fuse could allow too much current to flow, risking overheating and potential fire.
   - **25 amperes (Choice B)**: Similar to choice A, a 25-amp fuse exceeds the safe current rating for AWG 14 wire, which could lead to dangerous conditions.
   - **20 amperes (Choice C)**: While this is lower than 25 and 30 amps, it still exceeds the safe limit for AWG 14 wire. A 20-amp fuse could also allow excessive current to flow before tripping.

3. **Useful Rules of Thumb:**
   - The NEC recommends that the maximum current for AWG 14 wire is 15 amperes for general applications.
   - Always choose a fuse or circuit breaker that matches or is lower than the wire's current rating to ensure safety.

In summary, for AWG number 14 wiring, a 15-amp fuse or circuit breaker is the correct choice to ensure safe operation and protection against overloads.