---------------------------------------------------------- RV7-List Digest Archive --- Total Messages Posted Wed 02/12/03: 5 ---------------------------------------------------------- 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 _____________________________________ Time: 07:21:33 AM PST US From: "Don/Marcia Piermattei" Subject: RV7-List: Grounding wingtip strobes --> RV7-List message posted by: "Don/Marcia Piermattei" Time: 09:02:06 PM PST US From: "Cliff Lotter" Subject: RV7-List: Grounding --> RV7-List message posted by: "Cliff Lotter" 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 _____________________________________ Time: 01:37:11 PM PST US From: "Francis, David CMDR" Subject: SEC: UNCLASSIFIED : RV7-List: Grounding --> RV7-List message posted by: "Francis, David CMDR" 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" 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 _____________________________________ Time: 02:13:46 PM PST US Subject: Re: RV7-List: Grounding From: Scott Trask --> RV7-List message posted by: Scott Trask on 2/11/03 11:01 PM, Cliff Lotter at exodus@gds.co.za wrote: > --> RV7-List message posted by: "Cliff Lotter" > > 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 _____________________________________ Time: 08:23:47 PM PST US From: "Boyd Seal" Subject: Re: RV7-List: Grounding --> RV7-List message posted by: "Boyd Seal" ---------- Original Message ---------------------------------- From: "Cliff Lotter" >--> RV7-List message posted by: "Cliff Lotter" > >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 > > >_- =================================================================== === >_- =================================================================== === >_- =================================================================== === >_- =================================================================== === >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 _____________________________________ Time: 08:40:10 PM PST US From: "Boyd Seal" Subject: Re: RV7-List: Grounding --> RV7-List message posted by: "Boyd Seal" ---------- Original Message ---------------------------------- From: Scott Trask >--> RV7-List message posted by: Scott Trask > >on 2/11/03 11:01 PM, Cliff Lotter at exodus@gds.co.za wrote: > >> --> RV7-List message posted by: "Cliff Lotter" >> >> 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.> > >