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post #1 of 8 (permalink) Old 11-12-2009, 10:55 PM Thread Starter
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Hey all, Sorry if this is a completely stupid question but when it comes to electric i am completely ignorant so figured I would ask instead of screwing something up,

I am thinking about buying a 12/3 extension cord which is for my air compressor which requires 15amps and my elcheapo orange extension cord from walmart just isnt giving it enough juice to run.

So my question is the location of it is also a place i use my circular saw,jig etc on occasion is it safe to plug something into a 12/3 extension cord which if i read right is for 15+ amps which only requires like 4.5 amps or the like or will it burn it up?

See im not sure if it pumps out that many amps all the time or what? because the cord im looking at has 3 female connectors so i could plug multipul tools in at the same time but not sure if say air compressor kicks on and im using say my dremel tool or circular saw will it also send 15+ amps to them? or does the tool compensate or the cord or what??


Sorry if this sounds completely stupid but i am completely ignorant when it comes to anything to do with electric.
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post #2 of 8 (permalink) Old 11-13-2009, 12:33 AM
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12/3 is rated for 20 amps, that's NOT what it DRAWS, but what it can HANDLE SAFELY, without overheating, so if you plug in something that draws less than 20 amps, it's no problem.. you can plug in and run a combination of tools that when added up, total 20 amps. things like a compressor or other capacitor start motors should be run by itself, or with 1 light, as the startup current is great.

Last edited by radios; 11-13-2009 at 12:35 AM.
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post #3 of 8 (permalink) Old 11-13-2009, 03:37 AM
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Paul,

How long is the extension cord? The maximum amperage decreases with length.

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post #4 of 8 (permalink) Old 11-13-2009, 07:58 AM Thread Starter
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well I just grabbed the tape measure and was shocked I guess i didn't think it was that long but it is around 60-62ft glad I measured was planning on just picking up a 50ft I was thinking around 45ft guess ill have to go for a 100ft not sure if they sell a 75ft.

I could shorten that by about 15ft if I plug into the basement outlet instead of the outdoor one but it also runs an extension cord that is plugged into an outlet that runs my shop light and radio etc on, would the 110 outlet still put out enough juice to run that shop basics and the compressor/saw etc?

Last edited by newwoodworker; 11-13-2009 at 08:00 AM.
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post #5 of 8 (permalink) Old 11-13-2009, 09:17 AM
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Hi Paul

Think about the wires in the walls it's just a drop cord more or less.. ,,stop by HD and pickup some hvy.duty cable and make your own..the bigger the better..use your thumb as a ruler..and not your little finger..

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well I just grabbed the tape measure and was shocked I guess i didn't think it was that long but it is around 60-62ft glad I measured was planning on just picking up a 50ft I was thinking around 45ft guess ill have to go for a 100ft not sure if they sell a 75ft.

I could shorten that by about 15ft if I plug into the basement outlet instead of the outdoor one but it also runs an extension cord that is plugged into an outlet that runs my shop light and radio etc on, would the 110 outlet still put out enough juice to run that shop basics and the compressor/saw etc?



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post #6 of 8 (permalink) Old 11-13-2009, 10:31 AM
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Hi Paul

As Bj suggested, stop in at your local HD or Lowes, pickup some heavy duty ext. cord. I recently picked up some 2 X 100ft and 2 X 50ft Rigid heavy duty ext. cords from my local HD, they aren't cheap but well worth the price.

As stated above, the longer the run, the heavier the cord will need to be. Check the packages, they'll show a chart.

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post #7 of 8 (permalink) Old 11-13-2009, 11:14 AM Thread Starter
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Will do ill head to local lowes, thank you all for your help!
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post #8 of 8 (permalink) Old 11-13-2009, 12:43 PM
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You might want to seriously consider running a 220 line and installing a breaker box. A 6 place box works for most uses.

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