nuckollsr(at)cox.net
Guest
|
 Posted: Tue Apr 25, 2006 1:22 pm Post subject: B & C Grounding Kts and Grounding Procedure |
 |
|
At 03:13 PM 4/25/2006 -0400, you wrote:
| Quote: |
<pbraswell(at)alterthought.com>
Jerry,
I can speak to how I addressed this. I'm a few weeks from flying, but I
generally feel good about the wiring/grounding at this point. I've had
absolutely no problems whatsoever.
I used the 24/48 block. 48 are on the cabin side, 24 on the engine side.
My ground cable runs from the - side of the battery to a point on the cage
(I'm in a Glastar), from the cage to the back-side of the ground tab block.
On the engine side of the firewall, I have a ground strap from the 24 tab
side to the engine block.
In terms of all the deivices in the airplane, everything gets its own ground
so every switch, device, etc that needs a ground, gets its own ground on the
ground tab. Same is true on the engine side of the firewall. I figured
that each device getting its own ground would eliminate multiple devices
failing because of a fault ground in the event that grounds were
daisy-chained or ganged together.
I don't know if this is in line with what Bob suggests, but in my mind it
seemed reasonable. 
|
Dead on . . .
Can't have a ground loop when there are no loops.
Can't have a poor quality ground do to lack of surface
preparation and/or loss of threaded fastener tension.
Can't have a single fastener drop the grounds for multiple
systems.
| Quote: | Are there additional ground tabs required to accomodate avionics and inst
panel ground tabs or do the above listed include those?
Should the avionics and panel grounds be collected on local tabs and then
those wired directly to the firewall forest of tabs as well?
|
check out the revision 11 additions to system ground diagrams
in Z-15 and the discussion about an avionics/panel ground in
Chapter 18. See photos on fabricating your own panel ground
bus in the photos file at:
http://www.aeroelectric.com/Pictures/Grounding
Note, panel/avionics grounds should be used only for instrument
panel mounted stuff . . . don't ground any other airframe systems
to this bus. Extend this bus to the firewall ground by either one
"chubby" wire (10AWG or so) or multiple 20AWG wires as suggested
in the Z-figures.
Bob . . .
| | - The Matronics AeroElectric-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?AeroElectric-List |
|
|
|
Get Email Distribution Too!
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
