The socket is usually 3 connections, 2 for AC power and one ground. Thus, the electrical circuit plug is the role of the source. In Europe the outlets provide AC voltage 230 V with frequency 50 Hz. Until a few years ago in Greece and other European countries, the outlets entered the houses, almost all with three poles which form an equilateral triangle. Flush plugs entered only in places where the housewife was going to put the refrigerator and the washing machine and terrace. Indeed the latter were on top and a cap to protect the waters. In 2003, however, the COMMISSION decided to no longer use sockets with three poles, and in the past have caused dozens of accidents from them. So from the beginning of 2004 in all European Union countries only used recessed sockets, named earthed and is much safer.
In TolisStores in Thessaloniki you will find a wide variety of outlets televes double, triple, sockets and terminal sockets passage.