6 Things to Know About Surge Protectors

Surge protectors are not the same as power strips A power strip just adds outlets. A surge protector has metal oxide varistors inside that absorb voltage spikes.

Look for a proper joule rating For computers, TVs, or audio gear, get at least 1000 joules. Lower ratings handle only small spikes.

Check clamping voltage and response time Clamping voltage should be under 400V, and response time under 1 nanosecond. These specs matter for sensitive electronics.

Stick with reputable brands APC, Tripp Lite, and Belkin make reliable surge protectors. Avoid no-name $8 models from gas stations or discount stores.

Surge protectors wear out over time After a few big surges or a couple of years, they stop working. Replace them every two years or after a known surge.

Never daisy-chain surge protectors Plugging one surge protector into another creates a fire risk, not extra protection. Use only one per outlet.