I'm bidding on a job for a fertilizer building. It has two systems, a receiving system and a blending system. Originally the owner was spec'ing ( he is supplying service/ Square D materials, I do wire, labor, etc) a 400/600 Amp 480v 3ph feeder from another building to his new building. The load is 85A receiving side, 285A blending side. He is now thinking running feeders to each motor control panel from the same other building. The OCP will be approx 250' away, out of sight.
I'm curious how you all feel about this. The owner feels its cheaper, I think more labor. I just think its better design to run a 600A feed to the new building, and run each circuit from that. Plus I can derive 120/208 loads via a XFMR that's fed from the 600A MCP, instead of running another 120/208 line to this building as well.
Anyone think of any violations? I'm thinking safety that you would want disconnecting means in that facility, vs 250' away in another building.
I'm curious how you all feel about this. The owner feels its cheaper, I think more labor. I just think its better design to run a 600A feed to the new building, and run each circuit from that. Plus I can derive 120/208 loads via a XFMR that's fed from the 600A MCP, instead of running another 120/208 line to this building as well.
Anyone think of any violations? I'm thinking safety that you would want disconnecting means in that facility, vs 250' away in another building.