[keithandpenne]

You have power at the power post breaker, then through the surge protector but nothing in the trailer, correct? Do you have any power on either leg of the cord? If you haven't, you might pull the cord where it plugs into the trailer, check voltage there. If no voltage there, you probably have an open in your power cord, most likely at the male end. We used to find many power cords would develop an open in the male end that plugs into the power post due to heat build-up.

As a park host, we were required to check the male ends before allowing anyone to plug in, it was amazing how many bad ones we found. We required their replacement before allowing to plug in as it would cause damage to the female receptacle in the pedestal.