Electrical outlets in the server rooms

I noticed a lot of contractors mount electrical receptacles above the racks up in the cable tray.  About 8' high.  Is that a normal practice?
When you bring a heavy UPS on the bottom of the cabinet the cable doesn't reach that high for the 10Amp twist lock plug.  And not very comfortable to run thick UPS cables up 8' to the tray above the rack.  
Is this a new standard practice these days?
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Tiras25Asked:
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ITSysTechSenior Systems AdministratorCommented:
It depends on your building codes in some cases. They usually mount them higher for a reason, like to avoid issues if the room was to get flooded etc.,.
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Tiras25Author Commented:
Well, I understand flooding issues in the basements.  Not on the 47th floor of a  skyscraper.
The other equipment is still mounted on the bottom like power strips, UPS, network gear, etc.
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ITSysTechSenior Systems AdministratorCommented:
Having it that high also allows for easy server rack movement with out worrying about blocking a electrical receptacle.
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Tiras25Author Commented:
So.. Do you have the same configuration in your server room?  Is it a standard these days?
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fred hakimRetired ITCommented:
All data centers I have worked in mount the rack power receptacles below the racks, but above the floor 4-8 inches.  Depends on how much space you have below the floor.  I have never seen rack power mounted in overhead cable racks, although overhead utility outlets might be handy for test equipment etc. (especially on the front side aisles).    Overhead racks normally carry low voltage (data) and fiber.   Most racks are designed for power entering the bottom.  I would think there must be some rationale you are not aware of.
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Tiras25Author Commented:
Thanks Fred.  Yes, must be some codes or something contractors used to do in some places.   In the case of the server rooms there's no space below the floor.  The floor is concrete.  
I see what you're saying, most racks designed for power below.  So maybe there's a space to mount on the very bottom of the racks.
Thank you!
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ITSysTechSenior Systems AdministratorCommented:
Our electrical receptacles are mounted the same as yours about 8 feet high and I could understand how this could cause difficulties. There might be a building manager in your building that could explain the reasoning behind it.
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Jackie ManIT ManagerCommented:
https://www.archdaily.com/283518/google-releases-never-before-seen-images-of-its-data-centers

Have a look at the photos inside the link above. It is how Google designs the server rooms in their data centers.

It is all about energy efficiency for mounting electrical receptacles above the racks up in the cable tray.
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