Grounding and Earthing

Hi guys, Can anybody tell me what is an earting transformer. What is the fuction and how it is conencted to the electrical system? Thanks

I am moving into an older house that has only 2-prong outlets. Some are 3-prong, but they are not grounded (I have a power strip that tells you if it is gounded or not). I found this at Ace Hardware....

How can we decrease the voltage between neutral & earthing wire? Voltage between neutral and earthing is called stray voltage how can we reduce it.

I am using an existing wire that was used for a dryer. I have changed the breakers to 2-20 amp single pole breakers and am splitting the line to make two 110volt GFI outlets for a whirlpool tub (1 for pump and 1 for heater). I have a red, white, and black wires, however, there is no bare copper...

Hi pals I had to replace my smps twice , I don't know what happened when I took it for repair , I was told that there was a short circuit and the board in smps is blown,so when I asked why did it occoured , I was told tat I dint had earthing to my pc, now what is this earthing and how...