Forgive the n00b question here, but with a 3 post power supply (neg, ground, and pos), if I am hooking up a load, or say, a multimeter, should I be hooking to pos and neg, or pos and ground? If I understand correctly, if I hook from pos and ground, I'd get say +15v (for example). Same as hooking between pos and neg. But if I hooked up between neg and ground, I'd get -15v?
Basically, if I'm not needing anything with a neg rail, I should just hook up between pos and neg, and forget the ground, yes?