Electrical Earthing
Have you ever been "shocked" when you touched an electrical home appliance such as fridge, TV, Oven?
Ouch! Well, then you already know something about the effects of electricity.
You know what happened? And why?
Because, your devise properly not connected to the earthing.
More videos:-
What is SCADA System? How to Work SCADA System?
https://www.youtube.com/watch?v=pWIe2T-QAE8
Neutral vs Ground - Difference between Earthing and Neutral
https://www.youtube.com/watch?v=ghdq
آی-ویدئو