What is a surge protector?
A surge protector is a device that protects your appliances and electronics like TVs, computers and refrigerators from a power surge. A surge protector also provides multiple plug points in one single power outlet. Check out the joules rating on the packaging of your surge protector which is the unit of measurement for energy – the higher the joules, the longer your devices stay protected.
What is a power surge?
When a sudden increase in voltage lasts longer than three nanoseconds or more, it causes an uneven power flow resulting in a power surge. Faulty wiring, a lightning strike and – the most common in South Africa – load shedding can cause a power surge. These repeated outages might damage and over time, blow up your electronics if they are not protected.
How do surge protectors work?
A surge protector directs energy to the devices that are plugged into its power strip. When the voltage rises above the acceptable level, the surge protector will divert the extra electricity away from your devices into the grounding wires. The number of joules may decrease in your protector after a big power surge and no longer be able to protect your devices. That’s why it is important to replace your surge protector every two years.