Leesparkykent
Nearly Esteemed
I would explain to the customer that the plumber who installed it had done it in such a manner that is highly frowned upon but actual electricians. I would then say that you now have a few options we either install a wireless thermostat, install a new cable or purchase a thermostat that only needs a two wire connection rather than three.post 18 tell me what would you do then if you had nothing else but the earth core / spare core off a flex
So is it a live conductor?completes the circuit and carry s a negative current away the same amount that is being drawn from the live within a tolerance i believe