eager2learn
Senior Member
- Location
- Mennifee,Ca
I have a 400 amp buss that is a 3 phase 4 wire system rated for 277/480 volts. This application is suppose to feed a 150kva step down transformer = 480-120/208 volts 3 phase 4 wire. I'm having diffuculties trying to figure out the feeder conductors aswell as over current protection for this particular installation. Where do I start?