Updated November 2, 2026 · Reviewed for accuracy by a licensed Uniform electrical contractor before publication
Layers of protection
| Layer | What it does |
|---|---|
| Panel-mounted device | Limits surges entering through the service. |
| Point-of-use protectors | Protect sensitive electronics at the outlet. |
| Equipment-specific protection | Some HVAC and pool equipment benefits from its own protection. |
Indicators and replacement
Many surge devices have a status light. After a major surge, check it. Devices that have absorbed surges may need replacement; follow the manufacturer's guidance.
Limits
Surge protection reduces risk; it can't guarantee protection against a direct lightning strike or every surge.