From the trunk, I have a 15mm copper pipe; is this sufficient to supply the kitchen + washing machine + sink in the toilet with cold water?
The distance is less than 2.5 m
Alternatively, I can access a 22mm pipe, but this would be much more complicated.
The distance is less than 2.5 m
Alternatively, I can access a 22mm pipe, but this would be much more complicated.
Yes, that's enough, unless you have unusually low pressure.