OK, I'm fishing for ideas, and experience, for an idea of mine.
The site is a massive industrial facility, with approximately 700 light fixtures; lights are 400W MH for the most part. Plant is fed by a 480v ungrounded delta system. Building is of the quickly errected I-beam frame / sheet metal skin type.
As you might guess, there are power quality issues. One bad ballast, and the induction equipment starts making bad welds.
I'd like to propose that we install transformer(s) to convert the power supply to a grounded 'wye' arrangement, using the building steel as my transformer ground.
Any thought, or experiences you'd like to share?
