i have been told by another electrician that a fused spur for a water heater cannot be above a draining board without rcd protection in a office building.I cannot find anything in the regs to confirm with this,can anyone help? also in the same building i have extended a ring main & changed the mcb for a rcbo due to a cleaner going in at night under no supervision & she will be using the sockets for the vacuum cleaner.The other electrician also says no need to do it because i am not putting in a new circuit"just put it down as a recomendation".I dont believe that this is true,any comments would be helpful