Fitting some new capacitors into one 400watt Powerplant ballast which was working and has been tested with some prewired capacitors, I have noticed that in the other working 400watt Powerplant it is wired differently. The ballasts and ignitors are identical venture components; only the capacitors are different. The first ballast has prewired plastic capacitors with the upper and lower wires of each crossed over into live and neutral heading towards the mains. The capacitors in the second which are being replaced were single aluminium capacitors, with the replacements being the single plastic type. Having read a HID pocket guide, it seems that crossing over the capacitors is not preferred so I have tried to follow this. Please have a look at the two circuit diagrams that I have put together along with a diagram of how the capacitors have been connected.
Edited by ricky420, 12 November 2007 - 01:28 AM.