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stevie2011
On a domestic install a plumber has hooked up his boiler to the mains and then run a flex probably longer than 8 meters underneath floorboards to his thermostat. I'm doing the rewire, but this had happened while i was away on other things, i'd told him this wasnt good practice and needs to be a 3 core and earth flat. As far as I've been looking the regs are vague about flex to fixed appliances, but through my experience (which has been mostly lighting systems install) we'd never used flex in lengths more than a meter, has anyone got any answers? because i can't actually think of a logical safety reason why we'd never do this.