Question

Which among the following statements are true regarding the ring system of wiring in domestic wiring?

• A. The wires form independent loops among the household appliances with the main live wire.
• B. A common connection exists from the live wire to all the appliances.
• C. The fuse box contains the fuse of a fixed rating.
• D. A separate connection exists from the live wire to all the appliances.

Answer 1

Answer: (A), (C), (D)

A separate connection exists from the live wire to all the appliances.

The ring system of domestic electric wiring consists of individual loops with each loop connecting only one household appliance to the main live wire. This ensures the appliances are working independently of one another, and hence, even if one appliance has an issue with power, the others remain unaffected. The system also has a fuse box at the mains that contains a safety fuse with a fixed melting point, i.e. fixed electric current rating.