Which of the following fuses has the highest rating?
Right Answer is:
The fuse rating is basically dependent on current-carrying to a particular connected load.
The order of the wring done for the consumer end connection is
- From Secondary distribution transformers, power lines are sent to each pole present in the streets.
- From the pole, each service main wire is connected to the energy meter of each house.
- From the main meter, it is distributed to the main circuits of the building.
- From the main circuit, it is then divided into sub-circuit connections.
The magnitude of current-carrying by the wries in the above process is given as
ipole > imeter > imain circuit > isub circuit
Hence pole caries are more current of different service mains of houses, pole fuse has the highest fuse rating. The current rating of pole fuse is ≈ 50 A.