The test voltage is two to four times greater than the normal operating voltage, and can be very destructive. For example, if all the navigation and communications systems are operated by the flight crew in flight after the lightning strike and no anomalies are found, checks to the operated systems would not normally be required. Lightning's extreme heat will vaporize the water inside a tree, creating steam that may blow the tree apart. Twenty-eight people are killed by lightning in the United States each year, according to NOAA's 10-year average of annual lightning fatalities. Signs of a home struck by lightning, if siding is present on the home, you can often see black scorch marks on the siding, located around the perimeter of the home. Concealed damage from lightning strikes and surges to your electrical system can be detected with CurrentSAFE instruments. Cars are havens from lightning—but not for the reason that most believe. Common signs that your home was struck include: A very important part of an electrical system test is to determine the resistance in the path of the electrical current. Meggers cannot test the resistance of the conductor material itself. We see this quite often when someone calls us, because the sprinkler system came on and just won’t shut off. As a result of lightning strike damage or a power surge the controller could send out power to multiple zones at the same time, even when the controller is in the “Off” position. Lightning strike damage to sprinkler systems often goes undetected for months. Resistance in the normal current path due to a damaged connection caused by the energy of a Lightning Strike would never be detected by a megger test. The question is where do you start to look for the problem. Notice that the wall has singe marks reaching from the box outward, also the discoloration of the white neutral now singed dark color. A very important part of an electrical system test is to determine the resistance in the path of the electrical current. Now if you think your home electrical system was in some way damaged by lightning or through a surge, it needs to be tested with CurrentSAFE. A direct lightning strike can emit shock waves powerful enough to move chimney bricks, roof shingles, and other roofing components. Lightning is unpredictable and so is the damage caused by it. Concealed Lightning Strike Damage to Electrical Wiring. The CurrentSAFE Service is a completely nondestructive test in virtually all aspects. In this case the first thing to do is to unplug the controller. United States. During the CurrentSAFE process our technicians inspect the wiring inside the walls using minimally evasive tools. Resistance in the normal current path due to a damaged connection caused by the energy of a Lightning Strike would never be detected by a megger test. So instead of testing for damage the megger test can cause damage. If your house is struck by lightning, the first thing you should do is call the fire department. Meggers only test the resistance of the conductor insulation. Some homeowner insurance policies provide coverage for power surge damage that is a direct result of lightning strikes. The Megger test sends a 500 volt to 1,000 volt DC current across an electrical system that is designed for 240 volts AC. Top Five Colossal Symptoms of Lightning Strike Damage to Your Sprinkler System. With the CurrentSAFE Service we methodically check every inch of wire in the electrical system, and every switch, every receptacle, and every light fixture outlet to insure that no latent defects from the Lightning Strike exist. Low voltage lighting on deck, air conditioner/heat (thermostats, our system itself was fine), generator, greenhouse, were all DOA but I wouldn’t have known it if I hadn’t checked. “You can also get burns from a lightning strike, at the entrance and exit sites.” The test current has been known to destroy lights bulbs and printed circuit boards that have been inadvertently left in the electrical system as it is being tested. Meggers cannot test the resistance of the conductor material itself. If ever hit by lightening, check all buildings (within the context of safety) for damage and all circuits to see if they work. What to do after lightning strikes? Falling bricks and shingles can cause severe damage to your roof. CurrentSAFE is the test we perform on homes after lightning strikes, electrical surges, and overall electrical hazard detection. We have performed … It is like trying to find the so called needle in the hay stack. Check anywhere there are GFI circuits. The testing makes sure there is no concealed damage or finds the hidden damage that would have otherwise been left to create a bigger problem like fire. Cooper Electric is experienced in dealing with insurance companies to mitigate damages caused by lightning strikes and surges on your electrical wiring. We have come across many lightning strikes that have exploded electrical equipment off the walls of homes, and that same power surge that damages electronics also damages the wiring in the walls. More time out enjoying your healthy landscape might make you more healthy too. You might need to evacuate your home, if the damage is too severe. This receptacle and wiring inside the walls had to be replaced. Signs of a Lightning Strike. Once the fire department has given an all-clear, you will need to call your local electrician to perform a surge inspection. The electrical system of a home or business is one of the most frequent points of entry of increased voltage from a lightning or surge event. You cannot create more damage with any test instrument that is used in the CurrentSAFE Service. Top 5 Garden Tips and Tricks To Do In February, Our WiFi Irrigation Controller Reviews Surprised Us, How to Spotlight Top Sprinkler System Repairs You Want This Year, Color Inspiration palette to do Daring Things from This Unique Source. When lightning strikes a nearby power line, it travels the path of least resistance from the power line to the meter and then into the home’s electrical panel. A megger test is very limited and only measures one value in the electrical system.
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