Replaced meter. The meter was faulty bonding screws was not tight and was arcing. The the screws eroded from arcing to the threads wouldn’t tighten properly. When dryer or a/c unit would turn on the lights would dim all the way out. A phase of panel would reach 160v and B phase would drop to 60v. Power is restored and working properly. Permit to be requested MONDAY morning and inspection of work upon availability of inspecting office.