Is whole-home surge protection required by the NEC?
The 2025 California Electrical Code is based on the 2023 NEC. Section 230.67 addresses surge protection for services supplying dwelling units and other specified occupancies, including applicable service-equipment replacement. Sections 215.18 and 225.42 address applicable feeders and outside supplies. This does not mean every untouched older home is automatically required to retrofit. We confirm the project scope and local requirements.
Which surge protector rating matters?
Use a listed device suitable for the system and installation. For installations covered by the 2023 NEC provisions, Type 1 or Type 2 protection and a minimum 10 kA nominal discharge current rating apply. Nominal discharge current is different from an advertised maximum surge-current capacity. Voltage, installation type, breaker and enclosure requirements must also match.
Do I still need surge outlets or plug-in protectors?
Panel protection and point-of-use protection serve different locations. Coordinated protection can add a layer for computers and entertainment equipment. A plain power strip may provide no surge protection. We help select listed equipment and follow its installation requirements.
Will a surge protector stop outages or repair a lost neutral?
No. An SPD limits transient voltage spikes; it does not supply backup power or correct sustained overvoltage or wiring faults. Unusual bright/dim lights, burning smells or repeated damage require troubleshooting.
How often should a whole-home surge protector be replaced?
There is no universal replacement interval. Follow the model instructions and check its protection-status indicator, particularly after significant events. If it reports loss of protection, arrange replacement. Warranty and connected-equipment coverage depend on the exact manufacturer's terms.