Have recently moved into a granny flat 50m away from the main house I want to extend the WI FI from the main house to the granny flat using a TP link powerline wi fi kit with built WI FI transmitter at the granny flat end,

They are both on the same mains supply but it is a 3 phase and neutral  system I am not sure if the are both on the same phase.I would appreciate if anyone could help on the best TP-Link model to purchase. Any other comments on this would be appreciated.

Thanks in advance

J.Smith