Earthing from cabinet

[mastercool8695]

Yeah thank you, I believe they are properly grounded, didnt get shocks from PS3 or tatasky...If I use another cable (from local shop) will it cause any harm to my components??

I dont have any experience with buying an Extra Power Connector, I didnt need any .

and AFAIK, the cables that local stores give (the cable has a three pin Female International header one one side and Usual three pin on the other) is good. like this :
*newimg.globalmarket.com/PicLib/439/2606439/prod/14_1357368690691_l.jpg
and dont be sure that your home has a proper earthing simply because you dont get shock while touching PS3. as PS3 has most of its outer body NON metallic.

and to check whether you have proper Earthing or not, you may call a local Electrician or you may try your self :
*i.imgur.com/oXsU83E.png
tick means that in ideal condition the bulb should glow, cross means that in ideal condition the bulb should not glow