I have conflicting opinions on this project. We are looking to need 3 phase 480v service mostly for process heating (225kW). We have other items such as lights, heat tracing, etc...which has me thinking Wye (multiple voltage requirements). Another individual in the this project said they want delta coming in. Would a delta connection be more advantage in this scenario? In researching just to check my thoughts, I can't see delta in this scenario as I would have to have a neutral for lower voltage equipment which is going to give me a high leg I can't see any use for. I get the reliability is higher for delta, but I can't see this being an issue as if for some reason we lost a phase (mostly for process heating), low temp shutdowns in the controller will shut down the system and we would analyze the fault. I'm not fluent in the wye vs delta, but in research, it seems that delta is used more for motor applications also.
Just want to see if I'm missing something from my end and get other opinions.
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