Why is parallel arrangement used in domestic wiring?
Parallel arrangement is used in domestic circuits so that when short circuit happens, few damages happen and all the electric equipment won’t get effected.
In parallel combination equal power is supplied to all the equipment in a house but in series connection the power received by each equipment changes according to the equipment connected in the house which will lead to a lot of problems.
Each device will have the same voltage which is equal to the voltage of the supply. If two or more devices are used at the same time then, each appliance will be able to draw the required current.