Tags: Surge Protectors. From desktop to critical infrastructure, Tripp Lite products and solutions power and connect the computers, networking equipment and electronic devices that form the foundation of our digital world. Headquartered in Chicago since , Tripp Lite has offices and partners worldwide. Contact Us. What Are Joules? Next Steps Need more information about Surge Protectors before you purchase? See our helpful Surge Protector Buying Guide.
Currently have a Surge Protector? Find the equivalent Tripp Lite model. Once fried from a surge larger than its joule rating, it no longer protects anything.
Clamping voltage: The joule rating is only half of the protection story — the other rating is the clamping voltage , which is at what over-voltage the protector begins to work. If not listed in the specs, then the rating is likely not useful. A lower clamping voltage indicates better protection. There are three levels of protection in the UL rating — volts, volts and volts.
Generally, a clamping voltage of more than volts is too high to be useful. This is the minimum voltage at which protection will begin. The absolute minimum joule rating for anything you want to protect is joules. However, for anything really valuable, opt for joules of protection or more. Power Strip Overload For example, you would not plug a coffee pot, heater, or electric frying pan into a power strip because they each require a substantial amount of electricity to work.
Plugging such high wattage devices into power strips can easily result in an overload or overheat condition. On paper, yes, you can. The biggest thing is making sure the extension cord can handle the same amount of load as the surge protector or more.
Otherwise, you risk putting too much load on the extension cord and creating a fire hazard for yourself. Using an extension cord with a surge protector is a fire hazard at worst, and at best runs the risk of damaging or degrading the cords of either component. We do not recommend connecting a refrigerator or freezer to a surge protector. The compressor is sensitive to temperature and current overloads, and will shut itself down with a surge.
A surge protector will override this system, and if there is a power surge, your refrigerator may not restart. Can you use an extension cord for a refrigerator? Begin typing your search term above and press enter to search.
Press ESC to cancel. Ben Davis February 20, A lightning bolt doesn't have to strike near your home to damage your appliances.
If it strikes anywhere near a power line, it can cause an electrical current spike inside the power line. This can travel to your home and burn out your computer or TV.
There isn't a surge protector out there strong enough to protect you from lightning. If lightning is a common problem in your area, you should consider full-building protection. This might include a lightning arrestor to divert the bolts into the ground. In most large cities in the US the need for additional protection for your home is imperative.
Many electricians also recommend quality roofing companies like Castle Roofing or Chad Dodson Roofing. Make sure you have a great roofer and electrician ready in your area. High-power electrical devices can also cause power surges. These high-power devices are appliances you already have in your home, like a refrigerator or an air conditioner. When you turn these appliances on, they create a spike of power that's strong enough to fry other devices.
Poor electrical wiring like old or faulty wiring makes the problem worse. So how does a surge protector help? Your surge protectors can absorb the spike of power created during a power surge. But without the right clamping voltage or joule rating, your surge protector will do next to nothing for you.
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