A whole-house surge protector, also called a surge-protective device (SPD), is installed at your main electrical panel. It detects voltage spikes from lightning, utility switching, or large appliances cycling on and diverts excess voltage to ground before it reaches your devices and wiring.
Yes. The 2020 National Electrical Code (NFPA 70), Article 230.67, requires surge-protective devices in new dwelling unit service entrances. Utah adopts NEC editions by rule. Even in older homes, retrofitting a whole-house SPD is a code-compatible upgrade.
A whole-house SPD provides the first line of defense at the panel, but sensitive electronics such as computers and home theater equipment benefit from a second layer of protection at the outlet. Fowler Electric recommends a layered approach for maximum protection.
Installation costs vary by panel configuration and the SPD unit selected. Fowler Electric LLC provides free estimates for surge protection installations in Cedar City and across Southern Utah. Call 435-682-3866 to schedule.
A whole-house SPD significantly reduces damage from nearby lightning strikes by clamping overvoltages before they reach interior circuits. A direct strike to your home carries more energy than any SPD can fully absorb, which is why proper grounding and a comprehensive lightning protection system (per NFPA 780) provides the best protection.
Written by
Fowler Electric Team
Licensed Utah Electrical Contractor • License #12129347-5501 (E200 General / E201 Residential)