describe the ring system used in domestic electric circuit
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It consists of a ring-circuit. Wires starting from the main fuse-box run around all the main rooms of the house and then come back to the fuse-box again. The fuse-box contains a fuse of rating about 30A. A separate connection is taken from the live wire of the ring for each appliance. The terminal of the appliance is connected to the live wire through a separate fuse and a switch. If the fuse of one appliance burns, it does not affect the other appliances. For each appliance, the wires used for connection should be of proper current carrying capacity.
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