Check for 12 volts at the lug under the little snap-off protective cover located at the very rear of the power distribution center, at the end closest to the battery. That lug is where power from the battery enters the PDC. If power is on that lug, there is likely a blown fuse inside the PDC. If no power is at that lug, you probably have a blown wire somewhere leading from the the battery.
There is a 10 gauge fusible lnk (just a 10 gauge wire) in the lead coming from the alternator that could have blown but that you don't have power anywhere would start my troubleshooting at the power leading into and out of the PDC.