My son in law calls and his lights are flicking. Loose neutral . I go over check the panel , everything ok. Tell him to call POCO because I didn't want to break seal on meter box and mostly there is 3 feet of snow in front of it. Well POCO come out , young guy, well he open meter box and the neutral was never tighten down. They've lived in the house 10 years and brought it new. Oops