Fire alarm circuits are classified as either _____________ or ____________.

Fire alarm circuits are classified as either power-limited or non-power limited based on their operational characteristics. Power-limited circuits are designed to restrict the amount of electrical current that can flow through the circuit, thereby minimizing potential hazards such as electrical shock or fire in the event of a fault. These circuits are particularly crucial in fire alarm systems, where increased safety standards are paramount. They operate under specified voltage and current thresholds, which helps ensure the safety of both the equipment and the occupants of a building.

On the other hand, non-power limited circuits can carry more current and do not have the same safety constraints as power-limited circuits. This allows for more flexibility in the operation of devices connected to these circuits but may pose greater risks in certain situations. Understanding this classification helps professionals in the field design and install systems that adhere to safety standards while effectively meeting fire alarm performance requirements.

The other classifications do not pertain specifically to the operational safety constraints of fire alarm systems. High voltage and low voltage relate to general electrical classifications that don’t directly apply to fire alarm operational integrity. Similarly, inductive and capacitive classifications refer to types of electrical components and their behaviors rather than the safety and operational parameters of fire alarm circuits. Standard or advanced does not capture the