@Riley_S Thank you for your considered response! I'm pretty sure that my little adapter isn't the issue - it's just a one-foot length of the female end cut from an extension cord wired directly into...

@Riley_S Well, no. I have one of the units plugged (via a scary adapter cord I made) into a 220 applicance outlet next to the breaker panel. Another 220V breaker in that panel feeds a sub-panel in a...

I am trying to set up a pair of TL-PA4010 units to reach my well house, approximately 500 feet (<200m) away. The units are installed directly on the 220V power lines to the well and locally. If I...