ESA Certified Alarm Technician Practice Exam

What is the minimum wire gauge recommended by ESA for detection circuits?

1. 20 AWG

2. 22 AWG

3. 24 AWG

4. 26 AWG

The correct answer is: 22 AWG

The minimum wire gauge recommended by ESA for detection circuits is 22 AWG. This wire size strikes a balance between electrical resistance, capacity to handle current, and physical flexibility, making it suitable for the low-voltage signals used in alarm systems. Using 22 AWG wire helps ensure reliable communication and effective functioning of the detection circuitry, minimizing the risk of signal loss or degradation over longer runs, which could compromise system performance. Additionally, while thinner wires, such as 24 AWG or 26 AWG, may be easier to work with or more cost-effective, they are more susceptible to voltage drop and resistance issues, especially in systems with longer distances between devices. Therefore, 22 AWG is deemed the best minimum choice for ensuring optimal performance and reliability in detection circuits.