Power surges aren't predictable, with multiple causes including storms, faulty appliances, sudden changes in voltage on a circuit or even supply faults from your electricity provider. With electronic wiring becomming more intricate even a slight surge in power can cause major damage to these electrical systems causing irrepairable damage.
Power surges are most commonly caused when the flow of electricity is interrupted, then started again, or when something sends electricity flowing back into the system, like a lightning strike. Even though we mostly associate lightning with power surges, they are only responsible for around 2% of actual surges. It is estimated that more than half of the power surges you experience are caused by compressors or high voltage equipment cutting in and out in your home. These happen dozens of times of day, usually when devices with motors start up or shut off, diverting electricity to and from other appliances. The most common of which could be air-conditioning, fridges and kettles.
In a surge protector, the main power line or live wire has an extra connection linked to it that feeds to the earth. The earth wire sends any unwanted current safely into the ground. Normally the surge connection is inactive, but, if a larger than normal voltage appears the excess current is diverted safely down the extra wire to ground. That means no more current than normal flows into your appliance and it is protected from harm.
Power surge and overvoltage protection devices come in many shapes and sizes. For maximum protection we recommend overvoltage protection devices at the mains, and for important or sensitive equipment, a surge protected power point in the wall. Remember that over 50% of power surges occur within the home.
To ensure your home or business is thoroughly protected, we will inspect all the electrical appliances within your property and discuss with you which ones need protecting. Once we've made an individual assessment of your needs, we'll professionally install a surge protection solution that will help provide you the best protection for your essential electrical equipment such as security systems, medical equipment, TVs, computers and other electronics.
Once you have your safeguards in place you have to keep in mind that all surge protection devices will wear out sooner or later. The more times they are used to reduce spikes the quicker they will need to be replaced.
Think of surge protection devices like a cup of water. They can only hold so much water. Every time they do their job it is like taking a mouthful of water. How big a mouthful of water depends on the size of the spike. Once you are out of water, you are no longer protected. Your level of protection, or how much water you have in your glass, will determine how long it will last.