Oklahoma Burglary/Fire Practice Test

The correct wiring configuration for a household fire alarm system initiating circuit is series with End-of-Line (EOL) supervision. In this configuration, all initiating devices, such as smoke detectors or pull stations, are connected in a single circuit path.

When using a series configuration, the EOL resistor is placed at the end of the circuit to ensure that the system can monitor the integrity of the wiring and the devices. This setup allows the control panel to detect any disconnection or fault in the circuit, as any interruption in the series circuit will trigger a trouble signal. This is crucial for maintaining the reliability and effectiveness of the fire alarm system, since it ensures that if one device fails or if there is a break in the wiring, the control panel will be alerted to that issue.

Conversely, other configurations may not provide the same level of supervision for faults. For example, a parallel configuration would allow devices to be activated independently, which could result in a failure to detect a break in the circuit. Mixed configurations could introduce complexity that might impair the system’s ability to provide clear fault detection. A single wire configuration lacks the necessary supervision features altogether and is generally not suited for fire alarm systems. Thus, the series with EOL supervision is the optimal choice