Burglar alarm system interconnections shall not use copper wire and cable smaller than which gauge?

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

Answer: (B)

The main idea is establishing a minimum wire size for burglar alarm interconnections to ensure reliable signaling. In AWG, a larger number means a thinner wire, so “not smaller than” a certain gauge means the wire must be at least as thick as that gauge or thicker. The required minimum is 22 AWG, so the interconnect wires must be 22 AWG or thicker (lower AWG numbers like 20 or 18 are also acceptable). This threshold helps keep resistance and voltage drop low enough over typical run lengths to maintain reliable operation and supervision. Using thinner wire, such as 24 AWG, would introduce higher resistance and potential reliability issues.