M.P.S 3 Pin Top KIA sleek design that flushes with your wall. Best quality FR Grade Polycarbonate Material which doesn’t catch fire easily .Fitted with quality terminals Nickel plated pins provided long life .Properly aligned and convenient gripping. Screws & Terminals are tested and never slip while screwing wire. In a 3 pin plug, the top pin is for earthing , the pin on left side is for live and the pin on the right side is for neutral. In a 6A./16A Socket, the upper big hole is for earthing, the hole on the right Side is for the live wire connection and the hole on the left Side is for the neutral wire connection.