For example, if a surge protector with 800 joules absorbs eight surges of 100 joules each, it will no longer offer any surge protection. Therefore, with enough surges, the joules will all be depleted, and the surge protector will no longer be effective. Each time a surge occurs, the joules required to absorb the surge are permanently destroyed. It’s important to note that surges have a cumulative effect. A surge protector with 3,000 joules can absorb energy surges totaling up to 3,000 joules. The conversion formula from watts to joules is:įor example, a 60W lightbulb burns 60 Joules of energy for every second it’s lit up. A watt is the amount of energy (in joules) that an electrical device is burning per second. A surge protector joule rating indicates how much energy it can absorb before it fails. The higher the joule rating, the greater the protection.Ī joule is a unit of measurement of energy released over time. The joule rating of your surge protector determines how much energy your surge protector can absorb. With surge protection, it’s about joules. Whether it is a severe power event or frequent electrical surges, your equipment needs to be safeguarded by surge protection. Unlike high-level power surges, low-level surges won’t blow fuses or trip circuit breakers, but they can cause gradual degrading of internal circuitry and permanently damage equipment. These smaller, repeated power surges may damage your electronics and can eventually cause devices to malfunction. In fact, these sudden power surges may occur a dozen times a day, upsetting the steady voltage flow in the electrical system. Most power surges are generated from power utility spikes and large electronics cycling on and off. is hit by over 20 million lighting strikes every year, but lightning isn’t the greatest threat. Every home and business experiences power surges and spikes.
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