Anyone have any ideas what might cause lights in a house to flicker. Here is the situation- reidential remodel, 200 amp service for ~1800 square foot house. Periodically throughout the day every light that is on, on any circuit in the house will flicker once, similar to the way lights flicker when a large compressor or other piece of machinery is kicking over from a dead stop. These flicker pulses are about 10-15 mins apart, occur night and day even when no machinery is running and the only thing on are the lights. The house is not inhabited at the moment and I have observed this in the evenings after everyone has gone home and nothing was plugged or drawing any power but the lights. It is not specific to any one circuit in the house, but can be observed on any light that is turned on. I have checked the panel and everything is tight and connected. Could it be a problem with the nieghborhood power? maybe a transformer going bad or something else on the POCO side of things?
