Ham Radio General Class Practice Test 2025 – Complete Exam Prep

In determining the appropriate size of a fuse or circuit breaker to use with AWG number 14 wiring, it's important to consider the current-carrying capacity of the wire. AWG 14 wire is commonly rated for handling a maximum continuous current of about 15 amps under typical conditions.

Using a 15-amp fuse or circuit breaker aligns perfectly with this rating, providing adequate protection for the wire from overheating or potential damage due to excessive current flow. This ensures that if the current exceeds this rating, the breaker will trip or the fuse will blow, thereby protecting the wiring and reducing the risk of fires or equipment failure.

Other options, such as higher-rated fuses or breakers, do not provide the same level of protection. A 30-amp rating would allow too much current to flow through the wire before tripping, which could lead to overheating. Similarly, a 60-amp or 100-amp rating would be excessive and could easily result in severe damage to the wiring or create hazardous conditions, as these would not protect the AWG 14 wiring adequately. Thus, a 15-amp fuse or circuit breaker is the correct and safe choice for circuits utilizing AWG number 14 wiring.