Using parallel arrangement in domestic wiring has many advantages:

1. Each electrical appliance will work under constant voltage because potential difference is same in parallel combination.

2. When two or more appliances are used at the same time, each appliance will be able to draw the current as needed.

3. When distribution circuits are in parallel, then each circuit operates separately. So, if one of the distribution circuits gets overloaded, only the fuse in that circuit will be blown off. And other distribution circuits will remain unaffected.