I received this product this morning and while installing it I noticed that it says that both devices need to be installed on the same electrical circuit. I know what an electrical circuit is, but what does this mean exactly in this case? My situation:

I have a small hotel-restaurant. We have the main circuit breaker board with different, what we call 'groups' in Dutch (circuits?) for different areas in the whole building. Each group has an automatic circuit breaker switch (10A, 16A or 32A). Then on each floor there is another circuit breaker board with different 'groups' (circuits?) for each room, lights en sockets seperate of course.

Because of thick stone walls I want to put one device on the first floor after the thick wall across from the first device which is next to the router on the ground floor. So definitely two different groups! But with that also two different circuits in TP-link's definition?

Because it DOES seem to work! The wifi has improved on the first floor and the LED indicator for the powerline is blue/green. But does this mean it is installed the way it should be?

Or should I better install electrcl wire from the room on the first floor all the way down to create a socket next to the router on the ground floor to put every device on the same 'group' being the one on the first floor. Which is a lot of work, not 100% according regulations and defies a bit the purpose of a powerline solution because then I might as well install a networkcable and buy an accesspoint...

At the moment we are only using wifi for phone and tablets on the first floor, but in the future I want to connect a Smart-TV to the TP-Link device on the first floor.

Could somebody advice?

Thank you in advance!

Eric