What Causes Flickering Lights?
Occasional light flickering at home is to be expected. However, if lights begin flickering regularly, it might be time to do something about it. Flickering lights can indicate a serious problem in the electrical system that will need to be addressed promptly.
Here are the most common causes of flickering lights.
Loose light plugs
If flickering occurs on just one lamp, it could be due to loosely connected plugs and outlets. Check to see if the lamp plug is firmly inside the socket. If not, unplug it, adjust the prongs, and plug it back in.
Light bulb problem
Bulbs can become loose over time and lose proper contact with the socket. Tightening it may do the trick. If not, see if a new bulb solves the issue.
Certain types of light bulbs can also flicker when they’re failing or not operating at ideal conditions. For instance, fluorescent bulbs are known for recurrent flickering, especially when powering up in low temperatures, and, therefore, may not be a significant concern. On the other hand, LED bulbs on dimmer switches are prone to flickering. Dimmers are designed to handle high electrical loads, which is why they may not work very well with low-voltage LEDs.
Overloaded circuits
If the lights flicker, dim, or blink only when an AC or other major appliance is turned on, it may be the sign of an overloaded circuit. More power or current is being drawn than the circuit can handle.
If this happens consistently, the root of the problem may lie in the appliance. For example, bearing failure can cause the appliance motor to pull more electricity. Alternatively, the circuit might be exposed to large sensory overload. Contact an electrician to diagnose the condition and fix it as needed.
Faulty fixture or light switch
A poor connection between the bulb and the fixture or light switch can result in flickering. To verify, gently wiggle the switch and see if there’s a flicker. If the light is blinking, turn the switch on and off to see if the flickering ceases. If it does, the bulb will have to be replaced.
Voltage fluctuation
Flickering lights can also be brought on by fluctuating voltage. Apart from flickers, the other signs include unpredictable dimming and premature bulb failure. Slight fluctuations in voltage are normal in 120V circuits, but your house should always record between 115 and 125V. Those who know what they’re doing can use a voltmeter to check the supply voltage.
Loose wiring
Loose wiring is a hazard that can lead to house fires, not just flickering lights. The same goes for outdated wiring, switches, connectors, and breakers. If you notice frequent flickering, loose wiring may be the culprit, and the electrical system may need to be updated. This is a task best left to the experts.
A licensed electrician has all the tools and skills to repair home wiring and get to the roots of your flickering lights.
If you need a fast, affordable electrician for your home or business, call RSB Electrical at 480-485-4284.
