sub panel for a big PC room. help 24,000 watts

beast88mm · 06-28-2009, 09:25 AM

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

darren · 06-28-2009, 10:15 AM

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.

beast88mm · 06-28-2009, 10:24 AM

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

surrogate · 06-28-2009, 10:53 AM

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.

beast88mm · 06-28-2009, 11:06 AM

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.

J. V. · 06-28-2009, 11:15 AM

May I ask what you plan to plug into these receptacles? This is quite unusual.

Yoyizit · 06-28-2009, 11:18 AM

Will everything always be 'on' at the same time?

surrogate · 06-28-2009, 11:29 AM

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.

Yoyizit · 06-28-2009, 11:34 AM

You'll also need power factor correction.
http://www.youtube.com/watch?v=AI_e3dF14eg

darren · 06-28-2009, 12:40 PM

Quote:

Originally Posted by Yoyizit

You'll also need power factor correction.
http://www.youtube.com/watch?v=AI_e3dF14eg

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.

Scuba_Dave · 06-28-2009, 12:48 PM

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?

AndrewF · 06-28-2009, 06:48 PM

Your post is in violation of our posting rules
Personal attacks will not be tolerated
Moderator

Tradesman14 · 01-14-2010, 03:49 AM

Your post is in violation of our posting rules
Personal attacks will not be tolerated
Moderator

Gigs · 01-14-2010, 08:46 AM

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.

Red Squirrel · 01-14-2010, 06:44 PM

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.