Nadhif Ginola

I saw the Tekkit Wikipedia. Low-Voltage Solar Array: 8 EU/t Medium-Voltage Solar Array: 64 EU/t High-Voltage Solar Array: 512 EU/t I know that the "t" is Ticks but how many ticks are there per real life second? and what are EU's? Im currently learning tekkit and testing new stuff in my test world, i want a bit more explanation about Solar Array's / Panels And please tell me what tier of cable's you need for LV, MV and HV Solar Array's I really don't want to mess anything up with my current survival world :/ Cheers!