3 prong cable vs 2 prong???

can i use a 2 prong cable in place of a 3 prong. i made a diy cable and it doesnt use a green ground wire. can i plug it into a piece of equipment that possibly needs the green ground? thanks
Post removed 
gotcha. the cdp that i have only hjas 2 wires anyway, so i dont think it will be an issue. i was gonna try it on my preamp and see what it sounds like till i can finishe the iec mod on cdp. thanks