This morning I took a volt meter and cut the wires and hooked those up to a male 110v plug end I had laying around so I could just plug it into an outlet and see the voltage. I plugged it in inside the RV. It read around 126v. I turned the AC on and it went down to around 120.0. After it being on for about 10 minutes the lowest voltage reading I saw was 118.3 but that was only briefly. On high it hovered around 119. And on low it hovered around 120. The puck style adapter never got hot and I didn't blow a fuse. Mind you this is a 20 amp circuit and nothing else was on. Thoughts?