Today's Message Index:
----------------------
1. 07:21 AM - Grounding wingtip strobes (Don/Marcia Piermattei)
2. 01:37 PM - SEC: UNCLASSIFIED : Grounding (Francis, David CMDR)
3. 02:13 PM - Re: Grounding (Scott Trask)
4. 08:23 PM - Re: Grounding (Boyd Seal)
5. 08:40 PM - Re: Grounding (Boyd Seal)
Message 1
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| Subject: | Grounding wingtip strobes |
--> RV7-List message posted by: "Don/Marcia Piermattei" <dlpier@lamar.colostate.edu>
Time: 09:02:06 PM PST US
From: "Cliff Lotter" <exodus@gds.co.za>
Subject: RV7-List: Grounding
--> RV7-List message posted by: "Cliff Lotter" <exodus@gds.co.za>
Hi all.
My RV -7 has landing/nav/strobe lights in the wingtips. My question is does
one
take a seperate ground wire to the wingtips from the ground bus or do you just
ground it to the nearest point in the wing and what AWG do I use for the
ground
wire?
Cliff Lotter
South Africa
I successfuly grounded at the outboard rib with 18g wire.
Don Piermattei
RV-9A 192DP
Donald L. Piermattei DVM, PhD
5000 E County Rd 92
Carr, CO 80612
970/568-9047
Fax 970/568-7279
Message 2
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--> RV7-List message posted by: "Francis, David CMDR" <David.Francis@defence.gov.au>
Cliff,
The best advice on electrical matters is in an excellent book entitled The
Aeroelectric Connection, available from www.aeroelectric.com, additionally
its useful to subscribe to the aeroelctric list via Matronics, you get
online consulting for nothing. Its great.
For devices remote from the cockpit that do not require shilding (nav
lights, trim motors,servos,etc) use a local ground. The metal airframe is
the return path to the battery. The ground wire should be the same gauge as
the power line to the device. For strobes, which require shielded wire,
separate rules apply. Check the chapter of grounding in the Connection.
For devices in the cockpit and forward of the firewall each should have a
ground wire to a single ground point that penetrates both sides of the
firewall via a big brass bolt. This is the best way to avoid electrical
noise.
Regards, David Francis. VH-ZEE
-----Original Message-----
From: Cliff Lotter [mailto:exodus@gds.co.za]
Subject: RV7-List: Grounding
--> RV7-List message posted by: "Cliff Lotter" <exodus@gds.co.za>
Hi all.
My RV -7 has landing/nav/strobe lights in the wingtips. My question is does
one take a seperate ground wire to the wingtips from the ground bus or do
you just ground it to the nearest point in the wing and what AWG do I use
for the ground wire?
Cliff Lotter
South Africa
Message 3
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--> RV7-List message posted by: Scott Trask <sctrask@diisd.org>
on 2/11/03 11:01 PM, Cliff Lotter at exodus@gds.co.za wrote:
> --> RV7-List message posted by: "Cliff Lotter" <exodus@gds.co.za>
>
> Hi all.
> My RV -7 has landing/nav/strobe lights in the wingtips. My question is does
> one take a seperate ground wire to the wingtips from the ground bus or do you
> just ground it to the nearest point in the wing and what AWG do I use for the
> ground wire?
> Cliff Lotter
> South Africa
>
>
>
>
>
>
>
>
Hi Cliff
I'm grounding everything to the airframe with the ground buss and running a
ground wire as well. This might be a little over kill, but your getting a
good ground. In most things like cars trailer etc. that I had trouble
with(electrically) it usually ends up to be the ground.
Scott Trask IMT USA
7A
Message 4
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--> RV7-List message posted by: "Boyd Seal" <supersonic@mail.sisna.com>
---------- Original Message ----------------------------------
From: "Cliff Lotter" <exodus@gds.co.za>
>--> RV7-List message posted by: "Cliff Lotter" <exodus@gds.co.za>
>
>Hi all.
>My RV -7 has landing/nav/strobe lights in the wingtips. My
question is does one take a seperate ground wire to the wingtips
from the ground bus or do you just ground it to the nearest point
in the wing and what AWG do I use for the ground wire?
>Cliff Lotter
>South Africa
>
>
>_-
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>_-
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>_-
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>Personally, I like a ground bus with dedicated ground wires. I
have wing tip landing lightt with airframe grounding, and I get a
10 to 15 degree compass error when I turn them on. I plan on
running ground wires to the ground bus. I also had some grounding
problems with my electronic engine gages which went away when I
cleaned up some grounding problems.
Boyd Seal
Flying RV6 building RV8>
>
>
Message 5
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--> RV7-List message posted by: "Boyd Seal" <supersonic@mail.sisna.com>
---------- Original Message ----------------------------------
From: Scott Trask <sctrask@diisd.org>
>--> RV7-List message posted by: Scott Trask <sctrask@diisd.org>
>
>on 2/11/03 11:01 PM, Cliff Lotter at exodus@gds.co.za wrote:
>
>> --> RV7-List message posted by: "Cliff Lotter"
<exodus@gds.co.za>
>>
>> Hi all.
>> My RV -7 has landing/nav/strobe lights in the wingtips. My
question is does
>> one take a seperate ground wire to the wingtips from the ground
bus or do you
>> just ground it to the nearest point in the wing and what AWG do
I use for the
>> ground wire?
>> Cliff Lotter
>> South Africa
>>
>>
>>
>>
>>
>>
>>
>>
> Hi Cliff
> I'm grounding everything to the airframe with the ground buss
and running a
>ground wire as well. This might be a little over kill, but your
getting a
>good ground. In most things like cars trailer etc. that I had
trouble
>with(electrically) it usually ends up to be the ground.
> Scott Trask IMT USA
> 7A
>
>
>_-
===================================================================
===
>_-
===================================================================
===
>_-
===================================================================
===
>_-
===================================================================
===
>
>Use the same size wire for the ground as the hot lead.>
>
>
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