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jskiba(at)icosa.net
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 Posted: Sat Jun 21, 2014 6:28 pm Post subject: Z14 question about adding in external power Piper style jack |
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I have a question about:
Z14 question about adding in external power Piper style jack
I see where you can add it in to the main battery contactor on the battery side to charge the battery without having to energize the main battery contactor, but is there a way to also supply power to the AUX battery in the same way?
I thought about just running a wire between the two but then we just made a batterys connected at all times (not good right?)
Then I thought Diode, but that would have to be one HUGE diode to handle the power right ?
[img]cid:image001.png(at)01CF8D97.6E24D740[/img]
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user9253
Joined: 28 Mar 2008
Posts: 1935
Location: Riley TWP Michigan
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| Posted: Sun Jun 22, 2014 5:50 am Post subject: Re: Z14 question about adding in external power Piper style |
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Looking at figure Z-31B, Piper Style Ground Power Jack, there is no indication that the Ground PWR Contactor is energized. Once that contactor is energized during a jump start, it will hold through its contacts. If the pilot neglects to open the circuit breaker (or is not aware of the need), the ground PWR contactor coil will discharge the battery, similar to forgetting to shut off the master. I suggest that an indicator light be connected across the contactor coil of the ground PWR contactor.
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