I've replaced the kitchen in a studio flat and I'm about to start on the
The original setup was that the hot and cold were cross-bonded under the
kitchen sink and under the bathroom basin, the system was mainly copper and
the kitchen taps were attached to the s/s sink.
It now has a s/s hob and oven on the units on one side and, within easy
reach, a s/s sink on the other. The electrical earth to the hob & oven is
presumably connected to their casings. The monobloc tap is attached to the
worktop and not the sink. The sink waste is all plastic. There is a small
electric water heater under the sink supplying the sink and bathroom basin
and it runs off 6mm t&e cable from a separate fuse in the consumer unit. The
cu is probably 10 years old and has fuses and not rcds/mcbs. The cold water
to the sink and water heater, and the hot supply from heater to sink and
bathroom are in 15mm copper but with mainly plastic pushfit fittings, so no
electrical continuity under the sink but pipes from under the sink to the
bathroom are all copper afaict.
As the hob/oven, sink and tap are the most likely items to be touched
together I'd have thought that they should ideally be at the same potential
so I wondered whether I should connect the sink and tap to the electrical
earth of the water heater and continue this bond to the larger sections of
copper pipework under the sink. The cold feed and the hot supply to the
bathroom are isolated from this lot so I wondered whether I should just bond
them together as they come up under the sink and bond together the hot and
cold under the bathroom basin. I assume 4mm earth cable will suffice. I
don't really want to replace the consumer unit at this time.
I'd very much appreciate the help and advice of the experts in this group
before I do any more.