Lights still flicker. Mainly when my AC kicks on. Flickering Lights May Require a New Light Switch I have a light fixture that can be turned on/off by 2 different switches. The pole has a transformer, meter and a 200 amp service. The washing is plugged into a 20 amp dedicated circuit and the wiring connections are correct and tight. If you have loads that turn on and off, like lights, then the voltage supplying your lights will change, and a flicker will occur. We checked for bad neutrals and grounds at the service. Lights in the home only flicker when a large appliance (such as the air conditioner) kicks on. Even recessed lights can loosen, so check those connections first. There is a 200amp service on the house and minor voltage drop (less than 4 amps)when this unit is running (It draws 110 amps). However, flickering lights can also be an indication that there is a larger issue with your electrical system, in which case ignoring the issue can have serious consequences such as home fires. Had electric company out to inspect transformer. This is how the electrical service comes to the house. I have the electrical pole next to my barn, not next to the house. March: lights still flicker randomly. Flickering Lights & Intermittent Electrical Power Loss Diagnose & fix flickering or dimming lights or lost electricity. First off DON’T PANIC !!! This means that when the current reaches a destination, there is slightly less voltage for your various loads (lights, toaster, etc.). New construction, roughly one year old. DEAR TIM: I built a new home about two years ago. When the washing machine starts in the wash cycle all of the overhead lights in the house flicker. There may be a simple solution for your problem. This is actually a common problem, often associated with large outdoor A/C units that can draw up to 100+ amps when first turned on. The lights only flicker when 1 element is on. Many loads have inrush current, which draws a lot more current when first turned on. If we turn on more than 1 faucet or a bathtub and the second element kicks on, this problem goes away. AC repair man comes out 3 times - AC is in perfect condition with new hard start kit. Flickering lights or household lights that dim periodically can be a nuisance, but usually there is a benign cause behind the flickering. How to diagnose the causes of flickering or dimming lights at or in buildings. Any suggestions? I had the contractor dig a trench (200 ft) from this pole to the house. 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