N4ZQ(at)comcast.net Guest
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Posted: Thu Sep 24, 2009 5:53 am Post subject: Ground Loop posibilities |
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In my Lancair, I have two Odessey batteries and the - terminals are
wired as follows:
1. 4ga cable from A bat to B bat and from there to starter ground.
2. 10ga cable from A Bat to B Bat and from there to ground buss
forward of the panel. This ground buss is
electrically isolated from the rest of the airframe as it is mounted
on glass.
I can demonstrate continuity between the ground buss and any point on
the instrument panel and avionics stack as well as any of the control
cables which penetrate the firewall and attach to the engine. This
would seem to be made possible by the ground path from the batteries
directly to the starter ground point. From a ground loop point of
view, is this anything to be concerned about? Given all the cables
which attach to the engine and pass through the firewall to the panel,
I don't see how it would be possible to isolate the starter ground
cable path to the panel. Maybe this is a non issue and I should just
get on with building.
All comments appreciated.
Angier Ames
N4ZQ
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