Power Supply help :-/

[ingko]

Bought a Raidmax 868 w/a PS from newegg when it was on sale. Got it yesterday and was curious about the power supply since my buddy bought a PS from a mom 'n' pop store that drew sparks and blew out his entire system when he plugged it in. So I took it out of the box and plugged in the power supply to the wall socket. My newbieness to pc building makes me believe that it would at least turn the PS units fan on.

My friend told me that it probably won't turn on until I connect the motherboard to it. He thinks that the motherboard will 'tell' it to turn on.

So my question is: Is the power supply fan supposed to turn on when you plug it in?