During a thunderstorm, when lightning streaks across the sky, many homeowners worry about their electronic devices. A common misconception is that circuit breakers provide adequate protection against power surges. But is this really true?

The Role of Circuit Breakers

Circuit breakers serve one primary function: to protect wiring from overcurrent situations caused by overloads or short circuits. When electrical current exceeds the breaker's rated capacity, it automatically trips to cut power, preventing overheating and potential fire hazards. Essentially, circuit breakers act as safety switches that respond to abnormal current flow.

Why Breakers Fail Against Surges

Power surges are entirely different phenomena - momentary voltage spikes typically caused by lightning strikes, utility grid switching, or large appliances cycling on. These voltage spikes can reach thousands of volts, far exceeding normal household current. Circuit breakers react too slowly to intercept such rapid surges before they reach connected devices, leaving electronics vulnerable to damage.

Effective Surge Protection Solutions

Specialized surge protection devices (SPDs) offer the proper defense against voltage spikes. These devices either absorb excess voltage or divert it to ground, clamping the surge to safe levels before it reaches equipment. Whole-house surge protectors install at the main electrical panel, while point-of-use models plug directly into outlets. For maximum protection during electrical storms, physically unplugging sensitive electronics remains the most reliable method.

A Layered Defense Approach

While circuit breakers remain essential for basic electrical safety, they cannot substitute for dedicated surge protection. Homeowners should consider installing both systems for comprehensive protection. This dual-layer approach, combined with prudent storm precautions, provides the best defense for valuable electronics against unpredictable power disturbances.