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10-13-2007, 12:33 PM
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Join Date: Jan 2005
Location: SoCal
Posts: 2,061
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Amps required by alternator and ADI?
Anybody know how many amps are required by a 60 amp Plane Power alternator? Same question for a Trutrak ADI. Thanks.
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Steve Zicree
Fullerton, Ca. w/beautiful 2.5 year old son 
RV-4 99% built  and sold 
Rag and tube project well under way
paid =VAF= dues through June 2013
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10-13-2007, 06:53 PM
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Join Date: Aug 2005
Location: Dallas/Ft Worth, TX
Posts: 5,667
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Hmmm
Do you mean how much does the alt field draw? The ADI without an A/P is probably around 100ma (0.1amp).
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Walt Aronow, DFW, TX (52F)
EXP Aircraft Services LLC
Specializing in RV Condition Inspections, Maintenance, Avionics Upgrades
Dynamic Prop Balancing, Pitot-Static Altmeter/Transponder Certification
FAA Certified Repair Station, AP/IA/FCC GROL, EAA Technical Counselor
Authorized Garmin G3X Dealer/Installer
RV7A built 2004, 1700+ hrs, New Titan IO-370, Bendix Mags
Website: ExpAircraft.com, Email: walt@expaircraft.com, Cell: 972-746-5154
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10-13-2007, 07:23 PM
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Join Date: Jan 2005
Location: SoCal
Posts: 2,061
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Yup, exactly.
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Steve Zicree
Fullerton, Ca. w/beautiful 2.5 year old son
RV-4 99% built and sold
Rag and tube project well under way
paid =VAF= dues through June 2013
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10-13-2007, 08:09 PM
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Join Date: Jan 2005
Posts: 4,283
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About 5 amps
Quote:
Originally Posted by szicree
Yup, exactly.
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Its about 5 amps max, but it does not take away from the 60 amp total "RATED" capacity.
However I would not run a 60 amp alternator at 60 amps continuously, you will burn it out unless you had some very efficient and active auxiliary cooling. Most alternators are happy up to about 65% continuous, 75% may be (kind of like a Lycoming). If you need more amps, get a bigger unit, they make a 70 amp unit. However how anyone gets those kinds of amps I don't know. I have everything and the kitchen sink and not much in the way of LED lighting and I am maxed out at 35 amps, all up total.
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George
Raleigh, NC Area
RV-4, RV-7, ATP, CFII, MEI, 737/757/767
2020 Dues Paid
Last edited by gmcjetpilot : 10-13-2007 at 08:13 PM.
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10-13-2007, 08:38 PM
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Join Date: Jan 2005
Location: SoCal
Posts: 2,061
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Thanks for the info. I'm actually not concerned about how much it will provide, but rather how much the field will draw. I'm trying to calculate the total amount of juice that will go from my main contactor to my main buss.
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Steve Zicree
Fullerton, Ca. w/beautiful 2.5 year old son
RV-4 99% built and sold
Rag and tube project well under way
paid =VAF= dues through June 2013
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01-09-2010, 05:05 PM
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Join Date: Dec 2006
Location: UK
Posts: 368
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TT ADI actual current draw?
Resurrecting an old post...
Quote:
Originally Posted by Walt
The ADI without an A/P is probably around 100ma (0.1amp).
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Walt, or anyone,
Is this 0.1 amp current draw estimate an accurate figure for the TT ADI (without AP)?
TT install manual does not say. Just says to use 2 amp CB/fuse.
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Steve Hutt
West Sussex, UK
RV-7 G-HUTY (not flying yet)
( Tip-UP / TMX-IO-360-M1B / Hartzell 7497-2 / 1x LSE PLASMA III / Dual AF4500's / AF-Pilot AP / 695 )
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