Texas Fire Alarm License Practice Test

Under what condition are conductors of 28 A.W.G permitted?

1. If spliced with a connector for 26 to 24 A.W.G

2. If attached to a rated power supply

3. Only if they are shielded

4. If used in non-combustible areas

The correct answer is: If spliced with a connector for 26 to 24 A.W.G

Conductors of 28 A.W.G are permitted when spliced with a connector for 26 to 24 A.W.G due to compatibility and safety standards established in the National Electrical Code (NEC) and relevant industry guidelines. This allows for a secure connection that maintains the integrity of the circuit, ensuring that the 28 A.W.G conductors can function safely within the electrical system. Using a connector designed for larger gauge conductors ensures that the smaller gauge wires can handle the necessary electrical load without risk of overheating or failure at the connection point. This requirement helps to mitigate the risk associated with using smaller conductors, which are generally more susceptible to damage and have a lower current-carrying capacity. The other options present conditions that do not fully meet the acceptable standards for using 28 A.W.G conductors. Using them solely with a rated power supply may not guarantee safety without proper splicing, while the requirement for shielding is context-dependent and not a blanket rule for all applications. Additionally, using them only in non-combustible areas does not address the necessary electrical connections and compatibility that ensure safety and functionality.