I tested for a earth fault and found one, so I opened up the body. Looked for aleats 10 mins, tested again and there was now no fault.
5 more mins and i find this, a shocking sight, sharp egdes of the case rubbing agained the power wires. This unit is only 2 months old and this happens.
Shocking.
So just put some tape on this to stop it rubbing, technical......

You can even see the fraded wire
