See below for a wiring output from the CR-10 Power Supply. We recommend getting power from here. This is also applicable for MOST 12V/24V power supplies with the same connections. This is a 12V 30A PSU shown below. 24V PSUs are the same layout typically. Most PSUs have the 12/24V output labeled with V+ and V-. The AC lines are usually labeled with L,N, and G (G may sometimes be a ground symbol).
When in doubt send our support a picture and we can tell you which terminals to use. AC power lines will blow up the kit and completely destroy it.