Can a generator damage appliances?
Most generators can safely power typical household loads when used correctly, but there are situations where they may stress or damage equipment.
This guide explains where the risks come from and what you can do to protect your appliances.
When generators can be hard on electronics
Many modern electronics are sensitive to voltage swings and electrical noise. Older or cheaper generators may not regulate voltage as tightly, and some produce “dirtier” power with higher total harmonic distortion (THD).
Ways to reduce risk
- Choose an inverter generator for sensitive electronics when possible.
- Avoid overloading the generator, which can cause voltage dips and surges.
- Use properly sized cords and connections to reduce voltage drop.
When to talk to a pro
For whole-home or business setups, an electrician or installer can recommend equipment and protection devices that keep voltage and power quality closer to what your appliances expect.
Tip: you can always use the calculators on the GeneratorCalc home page to turn these ideas into rough numbers for your specific generator and situation.