KnowraMains electricityLinked fromLinked fromThe 5 pages that link to Mains electricity, each with the reason it gives.All 5Broader topic 1Related 2Narrower topic 1Compared with 1FrequencyRelated: Its voltage reverses periodically at a standardized frequency, commonly 50 or 60 hertz.VoltRelated: Its nominal supply voltage defines the operating conditions for household equipment.