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joyt12k Regular Member Joined: 12/05/2009 Location: AustraliaPosts: 49
Posted: 12:00pm 19 May 2009
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I'm just starting to build a wind generator with a F&P,
I know that 12volts changes to 240volts, but what happens to the watts and amps? What do they start out as and what do they end up as?jasmine
Tinker Guru Joined: 07/11/2007 Location: AustraliaPosts: 1904
Posted: 02:04pm 19 May 2009
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basic electricity:
12 x 20 = 240
So, you need 20 Amps @ 12V for each Amp @ 240V.
Watt = volt x Amp
That's as basic as I can put it Jasmine, there is obviously more to electricity but you would do better with a bit off googling, there is a lot of info online.
Good luck Klaus
joyt12k Regular Member Joined: 12/05/2009 Location: AustraliaPosts: 49
Posted: 09:51am 21 May 2009
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Thanks I think I understand.
For example.
12volts at 20amps would also be 240watts then, when put through an inverter would produce 240volts at 1amp and 240watts. Therefore as the volts go up the amps come down and the watts remain the same. Is that correct? and would it be enough to run anything? jasmine
Tinker Guru Joined: 07/11/2007 Location: AustraliaPosts: 1904
Posted: 02:46pm 21 May 2009
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Yes, its basically correct in theory but as Inverters also have losses the watts out do not exactly equal the watts in.
Run anything? its a big word, it depends You really need to be more specific and tell us what you would like to run from the inverter.Klaus
joyt12k Regular Member Joined: 12/05/2009 Location: AustraliaPosts: 49
Posted: 11:41am 23 May 2009
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Thanks, I thought 1amp would'nt be enough to run anything, however if everything is tied in then I guess that something that needs 240 watts would only draw 1amp,
and something that needs 1kw would draw 4 amps,therefore if the power goes to a battery bank first
then a lot more is possible, right?
Originally I wanted to feed back to the grid, now maybe I'll use it to power my workshop to run various power tools.jasmine
Tinker Guru Joined: 07/11/2007 Location: AustraliaPosts: 1904
Posted: 02:13pm 23 May 2009
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Jasmine, you'll need a *very* big capacity battery bank to draw 1KW from for any length of time.Klaus
joyt12k Regular Member Joined: 12/05/2009 Location: AustraliaPosts: 49
Posted: 02:22pm 23 May 2009
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Does that mean I can't use a 1400 watt angle grinder?
Maybe I should get the mains connected. This seems all too complicated.jasmine
AMUN-RA Senior Member Joined: 10/03/2007 Location: AustraliaPosts: 144
Posted: 04:08am 24 May 2009
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Take 1 everexeed 12 volt 200 amp hour battery available in perth 1 3000 watt modified inverter and go to work you will be suprised what you can do off 1 battery these are not cheap but you get what you pay for I use mine every day building houses Mick. Every day the sun shines
& gravity sucks= free energy.
joyt12k Regular Member Joined: 12/05/2009 Location: AustraliaPosts: 49
Posted: 10:29am 24 May 2009
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Thanks, have been checking out 3000w inverters, are the ordinary ones available on ebay suitable, or do they have to have a pure sine wave?jasmine
Notice. New forum software under development. It's going to miss a few functions and look a bit ugly for a while, but I'm working on it full time now as the old forum was too unstable. Couple days, all good. If you notice any issues, please contact me.
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