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Z19 first try and smoke/wire melted I did a mistake

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PostPosted: Sat Jun 16, 2018 3:14 pm    Post subject: Z19 first try and smoke/wire melted I did a mistake Reply with quote

It might not be as bad as you think.
If a visual inspection doesn't find a problem, I would pull all the
fuses and look for what is shorted with a ohmeter or a low current
source such as a small light bulb in series with the battery.

On 16/06/2018 6:03 PM, Achille wrote:

Good day,

After some months wiring my plane with Z19, long months, today was the day to set the master switch in ON... [Wink]

And I did a mistake... THE mistake. (The Ridiculouse mistake !!!)

On the wire to connect to my battery, one have a red cap, the other for the moment not cut. (only things that I have to do to finish completly) Weekend finishing I would like to know after months if it works.... before the week.

I set a pair of jumper cable on the aircraft battery let on the ground i connected it to the wire into the plane. (When I wire the battery cable, the red cap was... the only one adaptable to my terminal...) It was the ground cable !!! [Rolling Eyes]

So yes, I did the ridiculouse mistake. And after so much time to wire the plane to have it perfectly i do this kind of ridiculouse mistake.

Then... I set master switch ON. and I see a light... it was not a light it was a wire on the battery relay that it was on fire, melting completly his insulation.

my contactor :

my master relay switch :

After that I investiguate quickly, and I find that I set the polarity on the wrong way. I set it in the good one.

Same result ! Wire coming red without no more insulation.

My first question is :

- my IFF/Radio/electronics ignitions and all the electronics parts are good to the bin ? (I have a Trig S mode... new electronics Ignitions) wire like the Z19 with a diode and without avionics switch like the Z19.

- Why I have in the bad polarity, but also in the good this wire that is comming hot and red ?

- I spoke about the electronics instruments, but the others wires could be damage as the wire spoke above ?

If you have some advise for the next step for me... I will appreciate [Rolling Eyes]

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