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UPS system #198101
01/12/11 07:24 PM
01/12/11 07:24 PM
Niko  Offline OP
Member
Joined: Aug 2006
Posts: 356
Campbell, CA
I have a client who has 3 UPS system with a total 10KVA capacity. They currently have a 30Amp feeder with a Subpanel in the communication room.
They have asked me to install a 60Amp feeder for additional UPS units.

here are the question/s that i have.
>I assume i need to have a disconnect within site of the UPS units? Right?
>I will size the feeders to 125%?
>Existing, the UPS feeds the Existing sub panel by a SOO cord, is that O.K.

Thank you for your input


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Re: UPS system [Re: Niko] #198116
01/12/11 10:44 PM
01/12/11 10:44 PM
HotLine1  Offline

Member
Joined: Apr 2002
Posts: 7,050
Brick, NJ USA
Niko:

Yes to the disconnect.
125% is OK
Possibly OK, but more info is needed. Is the connection from the UPS via a cord cap? Is there frequent 'swapping' of the UPS? IF yes, then the cord could be acceptable.



John
Re: UPS system [Re: HotLine1] #198117
01/12/11 11:57 PM
01/12/11 11:57 PM
Niko  Offline OP
Member
Joined: Aug 2006
Posts: 356
Campbell, CA
There is no frequent swapping of UPS. Currently the UPS is cord & cap connected to the feeder receptacle sized 6AWG then the UPS feeds the subpanel sized 6AWG cord.





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