ABYC Marine Electrical Practice Exam

What is the exception for wire gauge when using wing nuts?

1. Must be 6 AWG or smaller

2. Must be 8 AWG or smaller

3. Must be 10 AWG or smaller

4. No exceptions apply

The correct answer is: Must be 8 AWG or smaller

When using wing nuts for connections, the specific wire gauge exception is that the wire must be 8 AWG or smaller. This guideline stems from the need to ensure proper electrical conductivity and mechanical stability of the connections. Wing nuts are designed to provide a secure grip on the wire, enabling easy assembly and disassembly, which is especially useful in marine applications where equipment may need to be frequently connected or disconnected. However, larger gauges (like 6 AWG) are less flexible and often do not fit well within the confines of the wing nut, leading to potential issues with secure connections and conductivity. Smaller gauges also maintain the integrity of the electrical connection and help prevent overheating or equipment failure, which is critical in the marine environment. Overall, adhering to the 8 AWG or smaller requirement when using wing nuts ensures reliable performance and safety in electrical systems aboard vessels.