Thunderstorms can set off fire alarms or smoke detectors. This is because lightning is a powerful current that causes a strong electromagnetic pulse (EMP) that can be picked by any conductor, including unshielded wires. Fire alarm systems can quickly sense the EMP from lightning bolts in nearby wires and get fooled into thinking there is a fire hazard. False Alarm will triggering of fire distinguishing system cause intteruption of operations.
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