Yes you need enough outlets from separate fuses, so that the fuses wont go off.
From 230V outlet and 10A fuse you can get 2300W.
Also when the time comes to enlarge your mining farm you will need to know do you have big enough main-fuses in your house to
support such a high energy consumption.
Also you will need big enough PSU's for your rig.
I would prefer you to use only 3-4 gpus in on motherboard, since the cost of the psu will be ridiculous.
This way you could save money, use it on gpu's and scatter the risk of rig-failure.