Quick answer
Surges from lightning, grid switching or power returning after an outage can destroy electronics. Surge protection devices (SPDs) in the distribution board divert surges to earth, data-line protectors do the same on network and camera cables, and a good earthing system gives the surge somewhere safe to go.
Real products, live prices, in stock now
See the actual productsLive prices from the Qyvea store
Shop all breaker products →Key takeaways
- Surges come from lightning, grid switching and power returning.
- SPDs protect at the distribution board; data-line protectors protect cables.
- Without good earthing, surge protection can't work.
- Outdoor cameras and gate controllers are most exposed.
01Where surges come from
- Nearby lightning strikes inducing surges in long cables
- Power returning after an outage
- Switching on the grid
- Faulty generators or changeovers
02Layers of protection
Surge protection
Distribution board SPDprotects the whole building
Point-of-use protectionrecorder, switch, UPS
Data-line protectorsoutdoor camera and network cables
Earthing systemwhere the surge goes
03Signs you need it
- Cameras or gate controllers failing after storms
- Several devices damaged at once
- Equipment failing when power returns
- Long outdoor cable runs to poles and gates
When to call a professionalSurge protection and earthing are electrical work and must be designed and installed by a qualified electrician.
04Frequently asked questions
Why did my cameras die after a storm?
Lightning can induce surges in long cables and power lines. Surge protection and earthing reduce the risk.
Does a UPS protect against surges?
Many UPS units include some surge protection, but a distribution-board SPD and data-line protection add important layers.
Is surge protection worth it?
It usually costs far less than replacing a recorder, cameras and gate controller after one storm.
