Wikipedia has a good description of how a ring circuit is used in home wiring. The diagram below is neater than the one I drew on my board in class. You can click on it to view a larger version of the drawing.
- The ring circuit for power sockets is rated at 30A.
- The ring design allows electricity to reach the socket from two different directions, so the current flowing in any one wire is lower.
- Since the current is lower, a thinner cable can be used. This saves money as copper is expensive.
Click below to download the Scout guide to home wiring.