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In France, for swimming pools with fibreglass shell, there is an earthing requirement which necessitates an earth point on one of the water pipes to the pool pump. As the systems are TT, this means an earth spike near the pump. However, the supply for the pump also requires an earth and they...

Been asked to connect controls on a new boiler (not UK, so don't panic). The boiler does hot water and has connections for 2 pumps. The plumbing is connected with the original motorised valve in place but not wired. The valve seems to have three connections (no earth), which I can use to move...