Match the following for type of earthing insulation
Match the following for type of earthing insulation
| S.No | Type of Earthing | S.No | Application |
| 1 | Plate earthing | A | Large installations such as transmission towers, all substations, generating stations |
| 2 | Pipe Earthing | B | In rocky area |
| 3 | Rod Earthing | C | In areas where the soil is loose or sandy |
| 4 | Strip earthing | D | For 11kV/400V distribution transformers |
Right Answer is:
1-A, 2-D. 3-C, 4-B
SOLUTION
Plate earthing:- It is used for large installations such as transmission towers, all substations, generating stations
Pipe earthing:-
- It found application for domestic installations such as heaters, coolers, refrigerators, geysers, electric iron, etc.
- For 11kV/400V distribution transformers For induction motors rating upto 100HP
- For conduit pipe in a wall, all wall brackets
Rod earthing: It is the cheapest method of earthing and is employed in sandy areas.
Strip earthing:- This type of earthing is used where the earth bed has rocky soil and excavation work is difficult