Why Do The Lights Flicker When Washing Machine Is Running?

When a large appliance like a washing machine starts operating, it draws a significant amount of electric current. This surge in power consumption can momentarily overwhelm a circuit, leading to a brief voltage drop. While this voltage drop is usually corrected quickly by the electrical grid, it can cause nearby lighting to dim or flicker momentarily.

The extent of the flickering depends on several factors:

1. Circuit Capacity: If a washing machine and other appliances like a dryer or dishwasher are connected to the same circuit, it might exceed the circuit's capacity. The washing machine's power draw can cause momentary voltage fluctuations, resulting in flickering lights.

2. Distance from Circuit Panel: The farther away a light fixture is from the electrical panel, the greater the voltage drop. Consequently, lights farther away from the circuit panel might flicker more noticeably than those closer to the panel.

3. Lighting Type: Incandescent bulbs are more susceptible to voltage variations compared to modern LED bulbs. Fluorescent lighting can exhibit a visible flickering effect due to its electronic components responding to voltage changes.

4. Wiring Condition: Old, faulty, or loose wiring can exacerbate flickering. Connections might not be secure enough, leading to voltage drops when a higher current flows.

5. Electrical System: If your home's electrical system is older, it might not have been designed for the current demands of modern appliances. This can result in overloaded circuits and flickering lights.

If the flickering is minor and doesn't persist for an extended period, it's usually not a reason for immediate concern. However, persistent or severe flickering may indicate an underlying electrical problem like faulty wiring or overloaded circuits. In such cases, it's advisable to consult a licensed electrician for evaluation and necessary repairs.