What is the minimum gauge for burglar alarm interconnection wires according to the guidelines?

• A. 24 AWG
• B. 22 AWG
• C. 20 AWG
• D. 18 AWG

Answer: (B)

The main idea is matching the wire size to the needs of burglar alarm interconnections so signals stay reliable without unnecessary cost. Interconnection wires carry low-current signaling between devices and the control panel, so they don’t need heavy gauge. The guideline sets 22 AWG as the minimum because it provides enough current capacity and durability for typical residential runs, while keeping the wire flexible and affordable.

Using thinner wire would push you below the minimum protection against resistance and voltage drop over distance, which can compromise signaling and supervision. Thicker wire, while perfectly acceptable, isn’t needed for these low-current interconnections and adds extra stiffness and cost without benefits in most homes.

So, the best choice is 22 AWG as the minimum for burglar alarm interconnection wiring.