There are 12 computers in a classroom, but only 2 electric outlets. Can we connect an extension cord to another extension cord?
I'm more concerned about safety. The computers have been running with no problems. The outlet is too far from the computers, that's why we have to use two extension cords/surge protector to be able to reach. How do I find out about amps?
I have 6 computers connected to one outlet and the other 6 connected to the other outlet through 2-6ft surge protectors.
Thank you guys for all the help.
2007-02-25 08:01:54 · 3 answers · asked by rema 2 in Computers & Internet ➔ Computer Networking
They are all desktops. No printers.
thank you again guys.
2007-02-25 08:45:40 · update #1
On the back panel of the computer should be a label with the amperage rating of the system. Also check the monitor for it's rating. Add them all up and that will give you a rough idea of how much power you are using on each circuit.
Never exceed 20 amps per circuit. This is the normal max for circuits wired with 12ga wire.
2007-02-25 08:08:37 · answer #1 · answered by afreshpath_admin 6 · 0⤊ 0⤋
*Chuckles* OK< if they're LAPTOPS they consume about 65 watts of power. In theory, you could connect about 15 of them on each plug.
Two plug in= a total of 2 each, 20 amp circuits, with a 20% safety margin (Per National Electric Code) gives you a total of 32 amps (16 amps) per plug.
So, lets do some math shall we if they're desktops:
450 watt power supply- nominal for most desktops
250 watt power supply- nominal for GLASS PICTURE TUBE displays.
75 watt if FLAT SCREEN's.
100 watt printer(s)
Based on what you've written, you're at just about the max power useage that can be done. You're real close to getting "Nusance tripping" on the circuit breakers- and if you don't believe me, each of those outlets should have a number either inside of them, or (hopefully!) on the outside. Find the circuit breakers and feel how hot they are.
2007-02-25 08:15:21 · answer #2 · answered by Anonymous · 1⤊ 0⤋
You're probably pushing your luck with that configuration. I assume not only are the computers plugged in, but each has a monitor? Any printers, network devices, other things plugged in?
If they're all on at the same time, you could be heading for trouble. As you note though, this depends on how the electric line itself. It may be OK. Ask your maintenance guys to check.
2007-02-25 08:08:00 · answer #3 · answered by BigRez 6 · 0⤊ 0⤋