What are the two main systems of wiring commonly used in houses? Which of these systems mentioned by you is better and why?

What are the two main systems of wiring commonly used in houses? Which

1.	What are the two main systems of wiring commonly used in houses? Which of these systems mentioned by you is better and why?
Answer» The two main systems of wiring are: (i) the tree system, and (ii) the ring system. Out of these systems, the ring system is better. The reason is that this system of wiring is cheaper because a low rating wire can be used for connection of appliances.