Mains Box Heat Monitor
This simple circuit monitors the mains distribution box perpetually associated sounds an alarm once it senses a heat because of warming, serving to forestall disasters caused by any sparking within the mains box because of short circuits. It conjointly mechanically switches on a bright white diode once the facility fails. The diode offers ample light-weight to ascertain the mains box wiring or fuses darkly. The circuit beeps once power fails and once more power resumes.