GLOSSARY
What is a Surge Protector?
A surge protector, also sometimes known as a surge suppressor or spike suppressor, is a device designed to safeguard plugged-in appliances from AC voltage surges and spikes. These spikes can occur due to both external and internal factors, such as lightning strikes, power outages, damaged wiring, or even power-hungry appliances turning on and off. Even small surges, when repeated over time, can damage sensitive electronics like PCs, TVs, and even gaming consoles.
How Do Surge Protectors Work?
Surge protectors guard against surges and spikes using one of two main components: metal oxide varistors (MOVs) and gas discharge tubes (GDTs).
The most common component in surge protectors is a metal oxide varistor, which works by absorbing and then redirecting excess voltage to a ground wire, preventing it from ever reaching the connected device. For the protection to function correctly, the surge protector must be plugged into a properly grounded outlet.
The second component is called a gas discharge tube, or sometimes a gas discharge arrestor. These act similarly to MOVs in that they also divert excess voltage away from plugged-in devices. GDTs contain an insulating gas that, when exposed to high voltage, becomes conductive and effectively creates a path to the ground.
Surge protectors that feature both components offer the best protection against voltage spikes. MOVs are better equipped to handle smaller, faster surges while GDTs excel when protecting against large, high-energy surges.
Do I Need a Surge Protector?
Yes, surge protectors are lifesavers when it comes to your precious electronics as many home outlets do not come with built-in surge protectors. They can help safeguard from high voltage spikes that can degrade electronics over time.
How Long Do Surge Protectors Last?
The lifespan of surge protectors vary depending on the frequency and intensity of power surges, but they are generally effective for 3-5 years. To ensure your devices remain safe, it’s important to check the specifications and recommendations provided by the manufacturer of your specific surge protector.
Are Surge Protectors the Same as Power Extension Cords?
No, power extension cords simply expand the number of electrical outlets whereas surge protectors contain internal components designed to protect connected devices from voltage surges. If you have several expensive electronics plugged into a standard power extension cord, it might be a good idea to switch to a surge protector in case of sudden power spikes.