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It is an industrial toilet extract fan single phase motor with 2 fans. Can not post photos. And on front casing is 2 boxes. 1 is the fan controller. This is where I am getting 70 volts from. I have taken covers off of both cases and there are no obvious defects. All I noticed was that there was...

Hi guys am a first time poster so be gentle ;). I have an induced voltage of 70v on the faceplate of a control unit on an extract fan I am working on. I have taken the plate off and there is an earth cable from the plate going on to the circuit board on back of plate. But there is no earth...