I am a little confused about the voltage posts.
Do I need to find out if my voltage is actually 208V, 220V/230V or 240V since electricians seem to just throw around the number that suits them when speaking of 110/120, 220/240V and 460V? Would the SP30 actually perform worse if the answer is 208V?
No. 208 is fine. 220 is fine. 240 is fine. You don't need to know which it is. The power supply will figure it all out for you and work great at any of these inputs. You just can't expect good performance at 120V, 110V, et cetera.