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How much power can the average US electrical plug provide? - Page 2

post #11 of 20
6 outlets per circuit in U.S. maximum by national electric code(NEC), rating of typical household circuit 15 - 20 amps
outlet max amperage can be identified by the outlet it self, if just straight prong it is a 15 amp outlet.( a good vacuum will pull 12 -15 amps at start up)
if it has a t looking prong on left side it is a 20 amp outlet.
most out lets installed in homes are 15 amp outlets installed on a 20 amp breaker(STUPID I know), be sure to check if your out let will be able to handle the power draw of items.
electrician for 12 years, wiring in a home can be a treacherous thing.if you don't know get an electrician.
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post #12 of 20
My confession,I removed the lamp out of the freezer but did not remove the fuse that powered this lamp. I tied up the cables real good so they would not get snagged but my wife got shocked pretty bad when the "juice" somehow found a path through her to the ground. I felt pretty bad for a good while. This was in Europe (meaning 230V). I Europe you do home electrican work at your own peril.You can be held liable for any consequences of your poor work. For some stupid reason I thought the lamp was on a 12v circuit.
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post #13 of 20
If you're really paranoid and feel like spending some money, replace all your standard plugs with ground fault interruptors. Between those and the breakers, any short you cause by burning out the wires will probably be stopped in time.

/mostly facetious, but there are good reasons to be concerned about overloads and electrical faults.
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post #14 of 20
Most breakers, due to housing being constructed for the cheapest they can, are limited by cabling (14 AWG) which can send 15amps at 120v. Well built houses will have 12 AWG which can supply 20 amps at 120v. Of course Voltage will differ between 115 and 125 as Phaedrus said but its best to plan on 115. Most breakers will still be 20 amps but yours may be 15. Although Outlets are rated to different amps I have never seen a 15 amp outlet die from 20 amps being pushed through it, nor have I seen 14AWG wire fry because of over amping it. Generally it will cause a ground fault before any issue and trip the breaker. The risk comes when you have "bad" outlets and "bad" wiring on a breaker that is rated well over them. Also the NEC may say 6 outlets per breaker but it does not say where they must be. Case in point I have 3 circuits powering the outlets in my house but all 3 are in each room. Wacky I know.

To be honest we would need a list of items you plan on using on the circuit. If you want to be really exact think about how old the house is. Wiring should be installed to last 100 years, but it rarely does.


tl;dr Give me what your running, and always assume its 115*15=1725 to be safe.
Edited by Sauerkraut - 8/15/11 at 11:15pm
post #15 of 20
in the uk you have to get a qualified electrician to do any electricale work even replacing a fuse in a plug if you arent qulified you are liable to prosicution it been like this for the past 20 odd years its to do with health and safety laws that are getting more stupide each year if you want to do a simple window cleaning job you are suposed to use a cherry picker or scafolding you cant use a ladder so a job that people used to do for a £5 has suddenly gon up to £300+ just to clean a window its because off stupide health and safty laws thats why people dont have jobs and thats one opff the reasons people rioted
    
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post #16 of 20
sorry about that get a little carried away sometimes at complaning about this country
    
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post #17 of 20
Quote:
Originally Posted by Quantum Reality View Post
If you're really paranoid and feel like spending some money, replace all your standard plugs with ground fault interruptors. Between those and the breakers, any short you cause by burning out the wires will probably be stopped in time.

/mostly facetious, but there are good reasons to be concerned about overloads and electrical faults.
You would only need 1 GFCI per circuit, and it would be pretty much pointless unless he is hooking his computer up next to his swimming pool.
    
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post #18 of 20
Quote:
Originally Posted by badatgames18 View Post
I'll be powering on a bunch of stuff as soon as a couple of things arrive in the mail... i was just wondering how much power does the average household electrical plug provide? (i use a power strip)

I really can't afford messing up anything in my house
I heard some people had to pay an electrician to rewire their house so they could provide sufficient power to their rigs without the circuit breaking or something (don't really have any technical idea of what i am talking about )
We run 120v here yo. As for power, that is amperage and varies by circuit. The average home has usually 15-20A circuits with some going as high as 100+ for suck things as washer and dryer etc.

At my dad's house I have a man cave where we had a 30A circuit to proved as much power as we wanted. had my desktop, plus a 360, 3 TVs. and a heater all running off of the one circuit. Eventually had 2 heaters for in the winter and had no issues.

Voltage isn't the issue in homes, it is the amperage.

IE you can get shocked with 100k volts of electricity with maybe 1/10 of an amp and survive with just being numb, but if you take 120v at 15A it can be all over in a heart beat.


BTW your average electric line here in the US (well at least where I lived) were 15000v and about 2000A or something like that. If something shorted on it, there would be blue electric/electron flames coming off of it.


kinda like this:


Edited by Lord Xeb - 8/15/11 at 11:41pm
 
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post #19 of 20
Quote:
Originally Posted by RockHardMcNasty View Post
You would only need 1 GFCI per circuit, and it would be pretty much pointless unless he is hooking his computer up next to his swimming pool.
Shh, don't give him ideas.
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post #20 of 20
Quote:
Originally Posted by RockHardMcNasty View Post
You would only need 1 GFCI per circuit, and it would be pretty much pointless unless he is hooking his computer up next to his swimming pool.
:laug her:
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