I understand that these units TL-WPA4220/PA4010 work via the electrical wiring when on the same circuit.  I have an out building that uses a 30 amp breaker in my house's main breaker box.  I have the TL-PA4010 connected to the router and plugged into the wall near the router and the 4220 plugged into the wall in the out building.  Now, the whole out building comes from the same 30 amp breaker in the houses main breaker box.  For some reason, none of the wall plugs inside the out building work; only the plug on the outside of the out building will work.  Any ideas why?

Also, I have a 60 watt light bulb plugged into that same outside wall plug.  For some strange reason, my internet speed just about doubles when the light is turned on.  Any ideas?

Thanks in advance...not sure if this is expected behavior or what...

Jeff