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 > 12Vdc Air Conditioning

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jolooote

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Posted: 07/15/12 08:08pm Link  |  Print  |  Notify Moderator

Learjet...20 amps is 20 amps no matter Whats loading or Recharging it...its, comparitively, ALOT of current...


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wolfe10

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Posted: 07/15/12 08:36pm Link  |  Print  |  Notify Moderator

Sorry, lack of math here.

WATTS is WATTS

Amps of 12 VDC is NOT equal to Amps of 120 VAC.

20 amps @ 12VDC equals 2 amps @ 120 VAC.


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Posted: 07/15/12 09:29pm Link  |  Print  |  Notify Moderator

that cabin cool is a chassis/ basement style unit , not small for the roof
but boy it does seem super efficient
he sure did not help the oem a/c and onan by starting and stoping the generator withe the a/c turned on

these guys should go to an RV show and demo these units


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Learjet

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Posted: 07/16/12 08:12am Link  |  Print  |  Notify Moderator

jolooote wrote:

Learjet...20 amps is 20 amps no matter Whats loading or Recharging it...its, comparitively, ALOT of current...


you might want to check that sir


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mena661

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Posted: 07/16/12 08:13am Link  |  Print  |  Notify Moderator

wolfe10 wrote:

Sorry, lack of math here.

WATTS is WATTS

Amps of 12 VDC is NOT equal to Amps of 120 VAC.

20 amps @ 12VDC equals 2 amps @ 120 VAC.
X2


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Learjet

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Posted: 07/16/12 08:14am Link  |  Print  |  Notify Moderator

wolfe10 wrote:

Sorry, lack of math here.

WATTS is WATTS

Amps of 12 VDC is NOT equal to Amps of 120 VAC.

20 amps @ 12VDC equals 2 amps @ 120 VAC.


Thank you! electrical advice on this forum gets pretty scary sometimes.

jolooote

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Posted: 07/18/12 07:54pm Link  |  Print  |  Notify Moderator

Lear, the man wants an AC thats going to draw 20 amps...that all thats important. He's gonna have to recharge those batteries after drawing 20 amps/hour. A good battery is gonna last about 4-5 hours. Than he's gonna have to run his generator all evening to recharge for the next days heat. Seems silly to me. Or he could cover an acre of land with solar panels. lol

smkettner

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Posted: 07/18/12 08:09pm Link  |  Print  |  Notify Moderator

An acre? Not quite that much. Probably 800 watts would about do it. 400 watts to run the air an 400 watts to recharge the battery to run the air into the evening. Maybe another 400w and more battery if it is to run well into the night. Should cycle some by then.


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mena661

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Posted: 07/18/12 10:40pm Link  |  Print  |  Notify Moderator

smkettner wrote:

An acre? Not quite that much. Probably 800 watts would about do it. 400 watts to run the air an 400 watts to recharge the battery to run the air into the evening. Maybe another 400w and more battery if it is to run well into the night. Should cycle some by then.
Yep, this is a hell of a lot more feasible at 20 amps.

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Posted: 07/19/12 02:43pm Link  |  Print  |  Notify Moderator

Until someone I trust stands under one on a hot day and says "Man that thing puts out some cold air, I'll tell ya" this critter goes into the "Good tasting salt substitute" and "Bernie Madoff's fund has the very best return" dept. Sorry.

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