Different types of electrical wiring are often used in different countries. The most common in England is the final ring wiring, which also received the abbreviated name “Ring” (Ring). This principle of wiring provides for the existence of two independent conductors for the phase, neutral and grounding in the room for each separately connected load or socket. Consider the types of wiring in more detail.
This scheme allows you to use fairly thin wires when installation, much thinner than with an anxidial wiring. Moreover, the total current strength is the same. The ring works like two radial branches. They function towards each other. The separation point will depend only on the load distribution in the middle of the ring. If the load is distributed evenly in two directions, then the current strength in each of them will be no less and no more than half of the common force. This allows you to use the wire in this type of electrical wiring half the best diameter than in any other. However, in practice it turns out that the load is not always distributed equally in two wires, so thicker cables are used.
This type of wiring first appears in the UK, approximately between 1942 and 1947. It spreads widely in England, but much less in the Republic of Ireland. They also gain popularity in the community of nations at that time, and this is due to the fact that Britain had previously had a fairly large influence on a number of these countries. Ring electrical wiring arises due to the fact that Britain was forced to join the program of massive rebuilding housing due to the Second World War. At that time there was a very acute shortage of copper, so it was necessary to develop such an electricity supply scheme in which its lower amount of it would be used. The plan states that the new scheme should be based on 13 ampere sockets protected by special fuses. As a result of this, several projects of forks and outlets appeared, different from those that were before. After the innovations, only a system with rectangular contacts, the so -called BS 1363, “survived”. However, the Dormond system & Smith, in which round contacts prevailed, was used back in the 1980s in many cities of the United Kingdom.