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Old 06-28-2009, 08:25 AM   #1
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sub panel for a big PC room. help 24,000 watts


so need help on setting up a 24 outlet room that needs to be able to hold anywhere from 600 watts to 1000 watts and at least 24 units. can i run this off a 100 amp main panel. to a sub panel then to a outlet board.

thanks for any help

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Old 06-28-2009, 09:15 AM   #2
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sub panel for a big PC room. help 24,000 watts


So each of the 24 plugs will be pulling 600W to 1000W, if so you are going to max out your 100A main pretty quickly(1000x24/240=100A). This is not takeing into consideration any thing else that is on the 100A service.

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Old 06-28-2009, 09:24 AM   #3
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sub panel for a big PC room. help 24,000 watts


yes each. ok so i should only run like half of that. so 12 to 16 600 watts would be ok. on a 100 amp
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Old 06-28-2009, 09:53 AM   #4
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sub panel for a big PC room. help 24,000 watts


There is a big difference between 600 & 1000 watts. 30 systems @ 600 watts each or 18 @ 1000 watts each would put you at a 75% load. Is there lighting or anything else going to be run off the sub? What size service is going to be feeding this sub? You need to do a load calc to see if you main service can support the additional load.

edit: oops, missed that you said you main is 100A. A 100A main isn't going to cut it unless this is the only room in the place and has no A/C or appliances.

Last edited by surrogate; 06-28-2009 at 10:00 AM.
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Old 06-28-2009, 10:06 AM   #5
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sub panel for a big PC room. help 24,000 watts


well if i ran 24 600 watts plugs what would i have left over to run the house like ac and house lights and a few fans no stove or cloths dryer.
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Old 06-28-2009, 10:15 AM   #6
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sub panel for a big PC room. help 24,000 watts


May I ask what you plan to plug into these receptacles? This is quite unusual.
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Old 06-28-2009, 10:18 AM   #7
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sub panel for a big PC room. help 24,000 watts


Will everything always be 'on' at the same time?
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Old 06-28-2009, 10:29 AM   #8
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sub panel for a big PC room. help 24,000 watts


Chance are that if you house is on a 100A main, you don't have much extra capacity. You need to provide much more detail about exactly what the draw is of the rest of the house. Central A/C? Refrigerator? Hot water heater?, ect. You are going to need to upgrade you electrical service and/or main panel to run 24 PCs. All those computers are going to generate a lot of heat that will need to be controlled.
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Old 06-28-2009, 10:34 AM   #9
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sub panel for a big PC room. help 24,000 watts


You'll also need power factor correction.

Last edited by Yoyizit; 06-28-2009 at 10:37 AM.
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Old 06-28-2009, 11:40 AM   #10
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sub panel for a big PC room. help 24,000 watts


Quote:
Originally Posted by Yoyizit View Post
You'll also need power factor correction.
Very true but your power company probably charges you per watt(actually KW) so power factor does not effect your bill. He is one of those guys who probably say that by fixing your PF you will lower your electric bill, if you are billed by the watt your watts will never change even if you go from a .1 power factor to a .99 power factor.

This comes into effect if you are a commercial or industrial customer where you do get charged for your apparent power.
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Old 06-28-2009, 11:48 AM   #11
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sub panel for a big PC room. help 24,000 watts


Is this a PC room or a Data center (servers) ?

Pc's use at most (usually) around 300 watts each Max
Much less on average when running
LCD screens use less then 100w - down to about 35w on a 17" model

Where are you getting 600-1000 watts for a PC?
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Old 06-28-2009, 05:48 PM   #12
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sub panel for a big PC room. help 24,000 watts


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Old 01-14-2010, 02:49 AM   #13
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sub panel for a big PC room. help 24,000 watts


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Old 01-14-2010, 07:46 AM   #14
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sub panel for a big PC room. help 24,000 watts


No need to be uncivil.

Nothing wrong with a little entrepreneurial spirit... Unless he burns his house down trying to run 24,000 watts from 100amp service.
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Old 01-14-2010, 05:44 PM   #15
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sub panel for a big PC room. help 24,000 watts


I am guessing he took 600 from the power supply "Rating". This does not mean it will actually be drawing 600 watts. A PC will draw a few hundred watts normally, maybe more if it's a powerhouse gaming machine like triple SLI with 8 hard drives and a squirrel cage fan or something.

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