A:AnswerYou don't have to plug the router power cord into the Powerline. Just plug the Powerline into a receptacle close to the router and then the ethernet cable from the powerline to the router.
A:AnswerYes you have to plug it directly to the wall outlet. Then you could plug the surge outlet to the netgear outlet if you have other devices on the surge protector.
A:AnswerYou also need an ethernet device connecting to the router. If it's in another building, it might not work. The box the devices come in show it working in a single building all sharing the same wiring.
So unless you set up a phone line or cable router in the outbuilding it probably won't work.
A:AnswerIt really doesnt effect wifi. It hard wires an ether net connection through outlets. So if you put this in your sons room. He will have a hard line connection minus 30 ft of cat 6 cable. It will be a bit faster than a wifi connection.
A:AnswerSolar panels may affect wifi. The tp link sends data through your electrical wires directly to the connected device, so the solar panels should not interfere with your connection!
A:AnswerYou cant plug the Netgear to the surge protector. Has to be plugged to the wall. You can plug the surge protector to the netgears outlet however.
A:AnswerThe loss of mbps depends on your electrical wiring. This did not work well when I plugged the 2nd box into the master bedroom outlet where I really wanted to get the wifi expansion by setting up a router as an access point. That had a poor connection. Every other electrical circuit had a good connection. I ended up putting the access point (router) in the spare bedroom on the other side of the master bedroom. I subscribe to 200 mbps speed through Xfinity. Speed test next to the main router over wifi run 200+. Where I got maybe 34-50 mbps I now get 100+ in the master bed room. That is satisfactory for my uses.
A:AnswerSure, you can connect a wifi extender and use any brand. Do not use the security setup on the Powerline 20000 it will sometimes interfere with the Extender or router you connect to it.