which of the following is true regarding fuse wire ?

1. the fuse rating in the mains is less than the fuse rating used for a power point .
2. the fuse rating at an electric point shoul be atleast the sum of the current drawn frome all the appliances connected to the point . 

1-Main fuse is put in the live wire and it has the highest rating of about 50A.

There are usually two separate circuits in a house:Lightning circuit and power circuit.

Fuse rating for power circuits (15A) is more than the lightning circuit(5A).

2-Fuse rating should be slightly more than the normal operating current of the equipment.

Hope this helps.