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Protecting Your Electronics from Power Surges

Power surges — sudden increases in voltage — are one of the most common causes of appliance damage during outages. In Greece, aging infrastructure and frequent switching operations make surge protection essential for every household.

What Causes Power Surges?

Power surges can come from several sources: lightning strikes near power lines, the utility grid switching loads (common when restoring power after an outage), faulty wiring in your building, or high-power appliances like air conditioners cycling on and off. The most dangerous surges occur when power is restored after an outage — the initial voltage spike can fry unprotected electronics.

Layers of Protection

1. Surge Protector Power Strips

The most accessible protection. Look for strips rated at 2,000+ joules with indicator lights that show they are still protecting. Replace them after any major surge event — they absorb energy and wear out over time. Cost: €15-40.

2. UPS (Uninterruptible Power Supply)

For critical devices like computers, routers, and medical equipment, a UPS provides battery backup during outages and surge protection. When power drops, the UPS seamlessly switches to battery, giving you time to safely shut down. Cost: €50-150 for home use.

3. Whole-House Surge Protector

Installed at your electrical panel by a licensed electrician, this protects your entire home from external surges (lightning, grid switching). Works alongside plug-in protectors for comprehensive coverage. Cost: €150-300 installed.

Practical Tips for Greece

  • Unplug expensive electronics when you know an outage is coming (check DEDDIE scheduled outages on Outage.gr)
  • Never plug your refrigerator into a surge protector strip — it needs a direct wall connection or a dedicated appliance surge protector
  • Install a surge protector on your router and ONT (fiber optic box) — internet equipment is highly vulnerable
  • If you live in an area with frequent outages (check the stats on your city page), consider a UPS for your home office
  • After any power restoration, wait 5 minutes before turning on major appliances
  • Document your electronics with photos and serial numbers for insurance and compensation claims