Transformer thumb rule in Tamil
Electrical Thumb rule version-1
https://youtu.be/_HLU906gEbI

Earthing basics
https://youtu.be/7X_Hy8i8Itg

Earthing VS Grounding
https://youtu.be/r681GIKJEr4

In this video Transformer thumb rules are explained with example
1.Rated current
2.Fault current
3.No load current
4.% of impedance,Impedance means what
5.Earth pit strip material and size selection
6.how many earth pits are required for transformer
7.transformer mounting selection
8.transformer loading
9.standard rating of single phase and three phase transformer

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