Understanding panel ratings

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32Lateralus

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Electrical
So im working at an odd voltage 360/208V for data hall panels.

The manufacturer has panels rated for 480/277V and 380/220V.

Will either of these panels work in my situation? Im inclined to go with the 380V as it meets the minimum rating and will not be undervolting the breakers as much as 480V (although we do not have any GFCI on this)

Any other issues to look out for?
 
What is the cost difference and availability?
Is the 380/220V a service voltage from the POCO?
What is the equipment rating, for loads such as HVAC?
Consider using 480/277 for future compatibility if service is ever changed
 
Any component's voltage rating is based upon the ability of its insulation system to prevent current leakage from its internal energized materials to the outside world. As long as a component's voltage rating exceeds the available voltage, it will satisfy the requirements. So either panel will work.

I do not know what you mean by "undervolting the breakers."
 
tom baker said:
What is the cost difference and availability?
Is the 380/220V a service voltage from the POCO?
What is the equipment rating, for loads such as HVAC?
Consider using 480/277 for future compatibility if service is ever changed
Click to expand...

Im checking on cost/availability assuming both with technically work. I wanted to know if using a 480V or 380V rated panel on a 360V system will have any issues?

Typically we get a 480V panel for a 480V system or likewise with 208V. But this is an odd situation based on some specific equipment using the 360V system voltage and I need to specify a panel for it. Manufacturers dont really have 360V rated panels so I wasnt sure if going to 380V or 480V would have any issues.
 
charlie b said:
Any component's voltage rating is based upon the ability of its insulation system to prevent current leakage from its internal energized materials to the outside world. As long as a component's voltage rating exceeds the available voltage, it will satisfy the requirements. So either panel will work.

I do not know what you mean by "undervolting the breakers."
Click to expand...
For 'undervolting the breakers' that was kinda a separate question as to whether they also just work as long as they are under their rated voltage or if you would run into any problems using an odd voltage lower than a typical rating. Just wanted to make sure I was covering my bases and not missing something
 
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