Do You Need Surge Protection With a Whole-House Generator?

What Does Surge Protection Do That a Generator Doesn't?

Surge protection limits transient overvoltage, while a generator supplies electricity during a utility outage. Transient overvoltage is a brief rise in voltage that can damage electronic equipment.

A surge protective device can't prevent every kind of electrical damage. We consider both backup power and electrical protection when reviewing your setup.

Can a Generator or Transfer Switch Prevent Power Surges?

No. A generator and automatic transfer switch manage backup power, but they don't replace a surge protective device. The switch transfers the home's power source between utility and generator power.

Generator output and utility power restoration are both part of the setup we review. We use the transfer switch layout to help determine where surge protection may be needed.

Where Should Surge Protection Be Installed in a Generator Setup?

Surge protection placement depends on the electrical panel, transfer switch and circuits served by the generator. We assess the equipment layout and manufacturer instructions before selecting a location.

The main panel may be part of the protection plan, but the transfer switch configuration matters. We also consider point-of-use surge protection for sensitive electronics on generator-backed circuits. A point-of-use surge protector is a device that helps protect equipment connected to it.

A damaged device or a warning indicator can signal that protection needs attention. We can check the device and recommend replacement when needed. We also review applicable code and inspection requirements as part of the work.