Three products get sold as "protection for your electronics," and they are not the same thing. Here is the plain version, from an electrician who installs all three.
1. The power strip
A surge strip uses small components called MOVs that clamp a voltage spike at the outlet. They react in microseconds, they wear out a little with every surge, and most people never notice when the "protected" light goes dark. A strip is fine for a TV. It does nothing for the furnace, the well pump, the garage door, the oven, or anything hardwired.
2. The whole-home surge protector
A panel-mounted surge protective device (an SPD, type 1 or type 2) clamps surges for the whole house at the point where the utility comes in. It catches the everyday events: switching surges, a transformer hiccup, a nearby lightning strike that rides in on the line. The 2020 National Electrical Code requires an SPD when a dwelling service is replaced, which is why we include one on every panel upgrade. It is the right baseline for every home.
3. The EMP protector
An EMP protector is a whole-home surge device built for a different speed. The E1 pulse from a high-altitude nuclear detonation rises in a few nanoseconds, and a solar flare or coronal mass ejection pushes a long, slow surge through the grid. A conventional SPD is not rated for the first and can be overwhelmed by the second. The unit we install, EMP Shield, is tested to the military EMP standards (MIL-STD-188-125-1, MIL-STD-461G, MIL-STD-464C), reacts in under a nanosecond per the manufacturer's testing, resets itself, and still covers lightning and utility surges, so it replaces the conventional SPD rather than sitting beside it.
Side by side
- Covers one outlet: power strip. Covers the whole house: whole-home SPD and EMP protector.
- Everyday utility surges: all three, with the strip only for what is plugged into it.
- Nearby lightning: whole-home SPD and EMP protector. A strip usually dies.
- Solar flare / CME: EMP protector.
- EMP (E1 pulse): EMP protector only.
- Warranty with real money behind it: the EMP unit we install carries a 10-year limited warranty and a lightning guarantee backed by a $25,000 insurance policy.
Why Colorado Springs homes should care
Front Range summers bring frequent lightning, the city is surrounded by military installations that make EMP a kitchen-table topic instead of a movie plot, and more homes every year have solar, batteries, EV chargers and standby generators. Every one of those is an expensive electronic device sitting on your wiring. One device at the panel protects all of them at once.
What matters more than the box
Any protector works by dumping energy into ground. If your grounding electrode system is weak, corroded, or was never finished, the protector has nowhere to send the surge. A Licensed Master Electrician checks the ground rods, the water bond and the panel bonding before mounting anything, keeps the leads short, lands the unit on the right breaker, and documents the install so the manufacturer's guarantee is valid. That is the part you are paying an electrician for.
Not sure what you already have at your panel? Text Eric a photo of the inside of your panel and he will tell you.