Lights in a house dimming and then going bright can be caused by various factors, including:
Voltage fluctuations: If the voltage supplied to your home fluctuates, it can cause the lights to dim and then go bright. Voltage variations may occur due to issues with the power grid, electrical equipment malfunctions, or heavy electrical loads being switched on or off in your home or nearby.
Overloaded circuits: If the electrical circuit powering your lights is overloaded, it can lead to voltage drops, causing the lights to dim. When the load is reduced, such as by turning off other appliances or devices on the same circuit, the lights may return to their normal brightness.
Loose electrical connections: Loose or faulty electrical connections can lead to intermittent power supply issues. When a connection becomes loose, it can cause resistance in the circuit, leading to voltage drops and resulting in dimming lights. When the connection is temporarily restored, the lights may brighten again.
Faulty wiring: Damaged or deteriorated wiring can cause fluctuations in voltage, resulting in lights dimming and then brightening. Wiring issues could be due to aging, improper installation, or other factors. It's important to have a qualified electrician inspect and repair any faulty wiring to ensure safety and reliable electrical supply.
Electrical load changes: When large electrical appliances, such as refrigerators, air conditioners, or motors, turn on or off, they can create temporary changes in the electrical load. These load changes can cause voltage fluctuations, resulting in lights dimming and then returning to their normal brightness.
If you experience frequent or significant fluctuations in your home's lighting, it is advisable to consult a licensed electrician. They can assess the electrical system, identify any underlying issues, and recommend appropriate solutions to ensure safe and consistent electrical supply.