Deep Dive: G0B03
The correct answer is D: 15 amperes. The size of fuse or circuit breaker that would be appropriate to use with a circuit that uses AWG number 14 wiring is 15 amperes. AWG 14 wire is rated for 15 amperes. For amateur radio operators, this is essential electrical safety. Understanding this helps ensure safe electrical installation.
Why Other Answers Are Wrong
Option A (30 amperes): Incorrect. 30 amperes is too high - AWG 14 is rated for 15 amperes, not 30. 30A would be unsafe. Option B (25 amperes): Incorrect. 25 amperes is too high - AWG 14 is rated for 15 amperes, not 25. 25A would be unsafe. Option C (20 amperes): Incorrect. 20 amperes is too high - AWG 14 is rated for 15 amperes, not 20. 20A would be unsafe.
Exam Tip
AWG 14 wiring = 15 ampere fuse/breaker. Think '1'4 AWG = '1'5 amperes. AWG 14 wire is rated for 15 amperes, so fuse/breaker should be 15A. Not 30A, not 25A, not 20A - just 15A.
Memory Aid
AWG 14 wiring = 15 ampere fuse/breaker. Think '1'4 AWG = '1'5 amperes. AWG 14 wire is rated for 15 amperes, so fuse/breaker should be 15A. Essential electrical safety requirement.
Real-World Example
A circuit using AWG number 14 wiring: AWG 14 wire is rated for 15 amperes. The fuse or circuit breaker should be 15 amperes to protect the wire. Using a larger fuse/breaker (e.g., 20A or 30A) would be unsafe - the wire could overheat before the fuse/breaker trips. 15 amperes is the appropriate size.
Source & Coverage
Question Pool: 2023-2027 Question Pool
Subelement: G0B
Reference: National Electrical Code
Key Concepts
Verified Content
Question from the official FCC General Class pool. Explanation reviewed by licensed amateur radio operators and mapped to the G0B topic.