Question

Where is the main fuse located? What is its purpose?

Answer 1

1. The main fuse in a house circuit is always connected to the live wire.
2. The fuse is connected in series with the live wire before it enters the household circuit.
3. This is done so because it is only the live wire which has a high potential of $200volts$ unlike the neutral wire which carries zero potential.
4. The fuse has a high rating of about$50amperes.$
5. Thus, it prevents any damage such as fire to the entire electrical wiring entering the house due to short-circuit or overloading.

Hence, the main fuse is connected to the live wire so that if the current exceeds its rating, the fuse melts and breaks the circuit; thus, preventing the excessive current from flowing into the circuit.