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"Contactor Questions" , battery in the trunk, now Ground pow

 
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bob.verwey(at)gmail.com
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PostPosted: Mon May 24, 2021 9:03 am    Post subject: "Contactor Questions" , battery in the trunk, now Ground pow Reply with quote

Thanks for the responses to my query....I now have the right solution.
Any recommendations as to how to tie this receptacle into the schematic?
[img]cid:ii_kp2ux4b70[/img]

More specifically the polarity relay that is indicated.
Best Regards,Bob Verwey

082 331 2727
[img]https://docs.google.com/uc?export=download&id=0B5d7rgAInTuTUUZsUjY4QmJsdVU&revid=0B5d7rgAInTuTdDJDaXRFZVh3b3lMa3FWL0s3MFdzc01YRlNvPQ[/img]      

On Sun, 23 May 2021 at 19:20, Robert L. Nuckolls, III <nuckolls.bob(at)aeroelectric.com (nuckolls.bob(at)aeroelectric.com)> wrote:

Quote:
At 11:57 PM 5/19/2021, you wrote:
Quote:
This is kinda related to contactors...

On the BD4 that I am rebuilding, the battery is behind the baggage compartment, with a really fat wire running up to the firewall.Â

IO 470 engine so lots of amps required for start.

Is there a recommended contactor placement/battery disconnect protocol out there?
I'm thinking safety in the event of an incident which might short out the fat wire to the fuselage.

  Battery contactor located as close as practical
  to battery; starter contactor as close as practical
  to starter. FAT wire connects battery contactor
  to starter contactor and main bus feeder.




  Bob . . .

  Un impeachable logic: George Carlin asked, "If black boxes
  survive crashes, why don't they make the whole airplane
  out of that stuff?"



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