Just DIYed my MH. Using the Victron set. I have placed the ballast externally just like here http://www.sgreefclub.com/forum/index.php?...=7746&hl=ervine
However, I faced some problems with the grounding. Whenever I ground the external box to the 3-pin earth, my house circuit breaker will trip. When I unearth it, it works fine. I used a test pen test the box and the test pen did not light up.
What shall do? Shall I unearth the 3-pin plug?
Also when I was dismantling the MH, I realised that Victron did not earth as well
Any guru can help?