What is the recommended breaker size for primary wiring in alarm systems?

The recommended breaker size for primary wiring in alarm systems is 20 amps. This size provides a suitable balance of safety and functionality. It is sufficient to handle the electrical load typically expected in most alarm systems without being excessive, which could potentially lead to larger circuit breakers that may not trip in the event of an overload. A 20-amp breaker also allows for a variety of devices to be connected to the same circuit without risking circuit overload, as alarm systems often comprise several components, including sensors, control panels, and communication devices.

Additionally, using a 20-amp breaker aligns with the National Electrical Code (NEC) standards for low-voltage alarm systems, which helps maintain safety and performance. It is important to adhere to these specifications to ensure that the alarm system operates reliably and to prevent fire hazards due to overloaded circuits. Therefore, this breaker size is standard practice in the industry for the primary wiring of alarm systems.