Surge, Lightning, and EMP Protection Explained
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EMP Shield disclosure: We are an independent affiliate of EMP Shield. We are not the manufacturer, a reseller, or its support team. If you buy through our EMP Shield links, we may earn a commission. Statements below about EMP Shield products are the company's own claims, quoted and attributed.
Outages end with a surge risk: when power is restored, or when lightning strikes nearby lines, a spike can travel through your wiring. Ready.gov's outage advice includes unplugging electronics so they are not damaged when power returns. This page explains your protection options in plain terms.
Three layers of protection
| Layer | What it covers | Who installs | Notes |
|---|---|---|---|
| Unplugging during outages | Whatever you unplug | You | Free and effective, but only works when you are home and remember |
| Plug-in surge protector strip | Only devices plugged into it | You | Check the joule rating and replace per the maker's guidance |
| Whole-home device at the panel | Surges entering the home's wiring at the panel | Licensed electrician | Protects hardwired appliances (HVAC, well pump controls) that strips cannot |
A general point about any panel-mounted surge device: it addresses energy conducted on the wires it is connected to. That is why many homes pair a panel device with plug-in strips at sensitive electronics.
Decision guide
- Renting, or only worried about a TV and computer? Quality plug-in strips and the habit of unplugging during outages are enough.
- Own your home, frequent lightning or outages, or expensive hardwired equipment (heat pump, well pump, solar)? Ask a licensed electrician about a whole-home surge device.
- Specifically interested in EMP and solar-storm (CME) protection in addition to lightning and surge? Read what EMP Shield states below and review its documentation.
Search plug-in surge strips → Amazon
What EMP Shield states about its products
EMP Shield sells hardwired and plug-in devices that it markets for lightning, surge, EMP, and CME protection. In the company's own words:
- It says its devices are "Built to exceed military standards (MIL-STD-188-125-1, MIL-STD-464C, and MIL-STD-461G)."
- It states it is "military tested and proven to defend against the E1, E2, and E3 phases" and that testing was done "at Keystone Compliance, in accordance with all military standards." Keystone Compliance is a real EMP test lab (see Sources).
- It says the device "reacts in less than 1 nanosecond" and describes it as "Capable of Withstanding over 228,000 AMPS."
- It describes its devices as "UL 1449 Compliant."
- It lists a "10 Year Limited Lifetime Warranty" and a "14 Day No Questions Asked Return Policy." Read the full warranty terms on EMP Shield's warranty page; we cannot interpret coverage for you.
EMP Shield offers models for single-phase homes, generators, vehicles, solar systems, and plug-in use. Panel models should be installed by a licensed electrician; EMP Shield publishes installation guides for each type.
Learn more: See EMP Shield's product line and documentation (affiliate link). Prices change often, so check the current price on EMP Shield's site.
Questions to ask before buying any whole-home surge device
- What does the manufacturer publish about its ratings and test standards, and in what exact words?
- What does the warranty cover, and what is the claims process?
- Does my electrician recommend it for my panel, and what is the installation cost?
- Do I still want plug-in protection for sensitive electronics? (Usually yes.)
For product, installation, or warranty questions about EMP Shield, contact EMP Shield directly.
Who should skip a whole-home device
- Renters who cannot modify the electrical panel; use plug-in protection instead.
- Anyone unwilling to hire an electrician for a panel install; do not DIY panel work.
- If your main concern is keeping the lights on, surge protection does not provide backup power; see sizing a power station.
FAQ
Is a power strip surge protector enough?
A plug-in strip only protects what is plugged into it. A whole-home device installed at the electrical panel addresses surges entering the home's wiring. Many people use both.
Can I install a whole-home surge device myself?
Panel-mounted devices should be installed by a licensed electrician. Plug-in units are designed for owner use.
Is EMP Shield UL Listed?
EMP Shield describes its devices as "UL 1449 Compliant." That is the company's wording; check EMP Shield's own documentation for certification details.
Related guides
- Winter Power Outage Checklist (Printable)
- Portable Power Stations by Household Size (What to Look For)