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Rear battery earthing structure

 
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nwparkinson(at)btopenworl
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PostPosted: Sun Oct 07, 2018 2:47 pm    Post subject: Rear battery earthing structure Reply with quote

Hi Everybody.

I’m building an RV8 with a rear battery location.

Can I please have some advice on the earthing structure . Can I just earth the battery to the structure in the rear , then take it the common earth at the panel ? Or is it worth running some asw2 cable to earth the panel , or the engine ??

I will have some rear avionics equipment , should I run the earth from the panel to these ? Or just tap of the structure locally ?

I’m not sure when I start running into earth loop issues ??

Many thanks.

Neil.


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nuckolls.bob(at)aeroelect
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PostPosted: Sun Oct 07, 2018 3:23 pm    Post subject: Rear battery earthing structure Reply with quote

At 05:46 PM 10/7/2018, you wrote:
Quote:
--> AeroElectric-List message posted by: Neil Parkinson <nwparkinson(at)btopenworld.com>

Hi Everybody.

I’m building an RV8 with a rear battery location.

Can I please have some advice on the earthing structure . Can I just earth the battery to the structure in the rear , then take it the common earth at the panel ? Or is it worth running some asw2 cable to earth the panel , or the engine ??

Ground battery locally

http://aeroelectric.com/Pictures/Batteries/Battery_Install_OBrien_3.jpg
http://aeroelectric.com/Pictures/Grounding/Local_Battery_Grounds_1.jpg

Install ground bus on firewall.

http://aeroelectric.com/Pictures/Grounding/Forest_of_Tabs_Ground_Kit.pdf
http://aeroelectric.com/Pictures/Grounding/gnd_bus.jpg


Run braided-flat-wire
from crankcase to firewall ground stud.

http://aeroelectric.com/Pictures/Grounding/Braided%20Copper%20Bond%20Straps.jpg



Quote:
I will have some rear avionics equipment , should I run the earth from the panel to these ? Or just tap of the structure locally ?

What kind of avionics? Anything with audio or digital
signal leads?


Bob . . .


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nwparkinson(at)btopenworl
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PostPosted: Sun Oct 07, 2018 11:12 pm    Post subject: Rear battery earthing structure Reply with quote

Thanks Bob.
Yes in the rear I was planning on installing the remote boxes for the transponder , com , etc.
So yes Audio and digital signals going back and forth ? How that effect the earth situation ?
Neil

On 8 Oct 2018, at 00:22, Robert L. Nuckolls, III <nuckolls.bob(at)aeroelectric.com (nuckolls.bob(at)aeroelectric.com)> wrote:
Quote:
At 05:46 PM 10/7/2018, you wrote:
Quote:
--> AeroElectric-List message posted by: Neil Parkinson <nwparkinson(at)btopenworld.com (nwparkinson(at)btopenworld.com)>

Hi Everybody.

I’m building an RV8 with a rear battery location.

Can I please have some advice on the earthing structure . Can I just earth the battery to the structure in the rear , then take it the common earth at the panel ? Or is it worth running some asw2 cable to earth the panel , or the engine ??

Ground battery locally

http://aeroelectric.com/Pictures/Batteries/Battery_Install_OBrien_3.jpg
http://aeroelectric.com/Pictures/Grounding/Local_Battery_Grounds_1.jpg

Install ground bus on firewall.

http://aeroelectric.com/Pictures/Grounding/Forest_of_Tabs_Ground_Kit.pdf
http://aeroelectric.com/Pictures/Grounding/gnd_bus.jpg


Run braided-flat-wire
from crankcase to firewall ground stud.

http://aeroelectric.com/Pictures/Grounding/Braided%20Copper%20Bond%20Straps.jpg



Quote:
I will have some rear avionics equipment , should I run the earth from the panel to these ? Or just tap of the structure locally ?

What kind of avionics? Anything with audio or digital
signal leads?


Bob . . .


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nuckolls.bob(at)aeroelect
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PostPosted: Mon Oct 08, 2018 8:04 am    Post subject: Rear battery earthing structure Reply with quote

At 02:09 AM 10/8/2018, you wrote:
Quote:
Thanks Bob.

Yes in the rear I was planning on installing the remote boxes for the transponder , com , etc.

So yes Audio and digital signals going back and forth ? How that effect the earth situation ?

Neil

Follow the wiring diagrams in the installation
manuals.

Remotely mounted black-boxes have been
around for a VERY LONG TIME . . . WWII radios
were almost always remotely mounted . . . that
vacuum tube stuff just wouldn't fit into an
already tight cockpit.

Signal and power management for such installations
were well understood and accounted for in the
installation instructions.

Having said that, it is not difficult to design
such systems to be goof-proof . . . difficult
to even deliberately cause a noise issue.

The vast majority of noise problems I've encountered
in light aircraft were in the audio system with
improper management of grounds to microphones and
headset jacks.


Bob . . .


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Mauledriver(at)nc.rr.com
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PostPosted: Mon Oct 08, 2018 12:19 pm    Post subject: Rear battery earthing structure Reply with quote

On 10/7/2018 7:22 PM, Robert L. Nuckolls, III wrote:

Quote:
At 05:46 PM 10/7/2018, you wrote:
Quote:
--> AeroElectric-List message posted by: Neil Parkinson <nwparkinson(at)btopenworld.com> (nwparkinson(at)btopenworld.com)

Hi Everybody.

I’m building an RV8 with a rear battery location.

Can I please have some advice on the earthing structure . Can I just earth the battery to the structure in the rear , then take it the common earth at the panel ? Or is it worth running some asw2 cable to earth the panel , or the engine ??

Ground battery locally

http://aeroelectric.com/Pictures/Batteries/Battery_Install_OBrien_3.jpg
http://aeroelectric.com/Pictures/Grounding/Local_Battery_Grounds_1.jpg

Install ground bus on firewall.

http://aeroelectric.com/Pictures/Grounding/Forest_of_Tabs_Ground_Kit.pdf
http://aeroelectric.com/Pictures/Grounding/gnd_bus.jpg


Run braided-flat-wire
from crankcase to firewall ground stud.

http://aeroelectric.com/Pictures/Grounding/Braided%20Copper%20Bond%20Straps.jpg



Quote:
I will have some rear avionics equipment , should I run the earth from the panel to these ? Or just tap of the structure locally ?

What kind of avionics? Anything with audio or digital
signal leads?


Bob . . .

To OP: I have an RV10 with a 2 rear batteries, a ground bus on firewall and a braided flat wire from crankcase to firewall ground stud. No problems (7 years flying)

In addition I have a variety of boxes installed in rear including Navworx ADSB, strobe unit, Magnetometers (sic), and ELT. I followed the installation instructions as Bob suggested. No problems.

This email has been checked for viruses by Avast antivirus software.
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ogdenk



Joined: 05 Feb 2007
Posts: 38
Location: Syracuse, NY

PostPosted: Fri Oct 12, 2018 8:26 am    Post subject: Rear battery earthing structure Reply with quote

Bill,
Can I ask where you got the battery busses from in this picture?
http://aeroelectric.com/Pictures/Batteries/Battery_Install_OBrien_3.jpg


Thanks . . .
Kent


Quote:
>> Bill Watson <Mauledriver(at)nc.rr.com> 10/8/2018 4:18 PM >>>
On 10/7/2018 7:22 PM, Robert L. Nuckolls, III wrote:

Quote:
At 05:46 PM 10/7/2018, you wrote:

Quote:
--> AeroElectric-List message posted by: Neil Parkinson <nwparkinson(at)btopenworld.com> (nwparkinson(at)btopenworld.com)


Hi Everybody.

I’m building an RV8 with a rear battery location.

Can I please have some advice on the earthing structure . Can I just earth the battery to the structure in the rear , then take it the common earth at the panel ? Or is it worth running some asw2 cable to earth the panel , or the engine ??


Ground battery locally

http://aeroelectric.com/Pictures/Batteries/Battery_Install_OBrien_3.jpg

http://aeroelectric.com/Pictures/Grounding/Local_Battery_Grounds_1.jpg


Install ground bus on firewall.

http://aeroelectric.com/Pictures/Grounding/Forest_of_Tabs_Ground_Kit.pdf

http://aeroelectric.com/Pictures/Grounding/gnd_bus.jpg


Run braided-flat-wire
from crankcase to firewall ground stud.

http://aeroelectric.com/Pictures/Grounding/Braided%20Copper%20Bond%20Straps.jpg




Quote:
I will have some rear avionics equipment , should I run the earth from the panel to these ? Or just tap of the structure locally ?


What kind of avionics? Anything with audio or digital
signal leads?

Bob . . .
To OP: I have an RV10 with a 2 rear batteries, a ground bus on firewall and a braided flat wire from crankcase to firewall ground stud. No problems (7 years flying)

In addition I have a variety of boxes installed in rear including Navworx ADSB, strobe unit, Magnetometers (sic), and ELT. I followed the installation instructions as Bob suggested. No problems.



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nuckolls.bob(at)aeroelect
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PostPosted: Fri Oct 12, 2018 9:11 am    Post subject: Rear battery earthing structure Reply with quote

At 10:04 AM 10/12/2018, you wrote:
Quote:
Bill,

Can I ask where you got the battery busses from in this picture?

http://aeroelectric.com/Pictures/Batteries/Battery_Install_OBrien_3.jpg

Thanks . . .

One source of many

https://tinyurl.com/y9sbdo9t




Bob . . .


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trigo(at)mail.telepac.pt
Guest





PostPosted: Fri Oct 12, 2018 9:55 am    Post subject: Rear battery earthing structure Reply with quote

Kent

I’m not Bill, but I know that SteinAir has these.
Best
Carlos

Enviado do meu iPhone

No dia 12/10/2018, às 16:04, Kent Ogden <ogdenk(at)upstate.edu (ogdenk(at)upstate.edu)> escreveu:
Quote:
Bill,
Can I ask where you got the battery busses from in this picture?
http://aeroelectric.com/Pictures/Batteries/Battery_Install_OBrien_3.jpg


Thanks . . .
Kent


Quote:
>> Bill Watson <Mauledriver(at)nc.rr.com (Mauledriver(at)nc.rr.com)> 10/8/2018 4:18 PM >>>
On 10/7/2018 7:22 PM, Robert L. Nuckolls, III wrote:

Quote:
At 05:46 PM 10/7/2018, you wrote:

Quote:
--> AeroElectric-List message posted by: Neil Parkinson <nwparkinson(at)btopenworld.com> (nwparkinson(at)btopenworld.com)


Hi Everybody.

I’m building an RV8 with a rear battery location.

Can I please have some advice on the earthing structure . Can I just earth the battery to the structure in the rear , then take it the common earth at the panel ? Or is it worth running some asw2 cable to earth the panel , or the engine ??


Ground battery locally

http://aeroelectric.com/Pictures/Batteries/Battery_Install_OBrien_3.jpg

http://aeroelectric.com/Pictures/Grounding/Local_Battery_Grounds_1.jpg


Install ground bus on firewall.

http://aeroelectric.com/Pictures/Grounding/Forest_of_Tabs_Ground_Kit.pdf

http://aeroelectric.com/Pictures/Grounding/gnd_bus.jpg


Run braided-flat-wire
from crankcase to firewall ground stud.

http://aeroelectric.com/Pictures/Grounding/Braided%20Copper%20Bond%20Straps.jpg




Quote:
I will have some rear avionics equipment , should I run the earth from the panel to these ? Or just tap of the structure locally ?


What kind of avionics? Anything with audio or digital
signal leads?

Bob . . .
To OP: I have an RV10 with a 2 rear batteries, a ground bus on firewall and a braided flat wire from crankcase to firewall ground stud. No problems (7 years flying)

In addition I have a variety of boxes installed in rear including Navworx ADSB, strobe unit, Magnetometers (sic), and ELT. I followed the installation instructions as Bob suggested. No problems.



<IMAGE.png> This email has been checked for viruses by Avast antivirus software.
www.avast.com

[url=#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2] [/url]





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John M Tipton



Joined: 07 Aug 2018
Posts: 12
Location: Devon - England

PostPosted: Fri Oct 12, 2018 11:32 am    Post subject: Rear battery earthing structure Reply with quote

http://www.bandc.aero/fuseholder6-slot.aspx

John

Sent from my iPad

----x--O--x----

[quote] On 12 Oct 2018, at 6:52 pm, Carlos Trigo <trigo(at)mail.telepac.pt> wrote:

Kent

I’m not Bill, but I know that SteinAir has these.

Best
Carlos

Enviado do meu iPhone

No dia 12/10/2018, às 16:04, Kent Ogden <ogdenk(at)upstate.edu> escreveu:

> Bill,
>
> Can I ask where you got the battery busses from in this picture?
>
> http://aeroelectric.com/Pictures/Batteries/Battery_Install_OBrien_3.jpg
>
> Thanks . . .
>
> Kent
> >>> Bill Watson <Mauledriver(at)nc.rr.com> 10/8/2018 4:18 PM >>>
> >
>> On 10/7/2018 7:22 PM, Robert L. Nuckolls, III wrote:
>> At 05:46 PM 10/7/2018, you wrote:
>>
>>>
>>>
>>> Hi Everybody.
>>> I’m building an RV8 with a rear battery location


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