I agree with Neil also I use shrink wrap as well around the copper to help
keep out the corrosion.
GB
----- Original Message -----
From: "Albaugh, Neil" <albaugh_neil@ti.com>
To: "'Bryan Savage'" <basavage@earthlink.net>; "List Land Speed"
<land-speed@autox.team.net>
Sent: Monday, February 02, 2004 2:39 PM
Subject: RE: Speaking of battery voltage
> Bryan;
>
> One thing missing in many installations is a good ground connection from
the
> block to the chassis. My preference is for a piece of 1" wide braided
copper
> between the block and chassis. This would cure half of the problems that
> I've seen.
>
> Regards, Neil Tucson, AZ
>
>
> -----Original Message-----
> From: Bryan Savage [mailto:basavage@earthlink.net]
> Sent: Monday, February 02, 2004 3:14 PM
> To: Albaugh, Neil; List Land Speed
> Subject: Re: Speaking of battery voltage
>
>
> I agree with you Neil.
> My 'grounding' paranoia comes from experiences with new computer
> installations in the '60's
> and helping people with their cars at Bonneville. Poor grounds have
> always been part of the
> ESD & EMI problems I've seen at Bonneville. Current technology
> electronics (last 10 yr's)
> is vastly better at resisting these problems than the good old stuff.
> Short pieces of 2/0 & 4/0 copper wire (10'-20') can be picked up from an
> electrician cheap,
> much less than the same size battery cable.
>
> Have fun,
> Bryan
>
>
> Albaugh, Neil wrote:
>
> >Bryan;
> >
> >True, but if you have enough of it, iron or steel will do just fine.
> >
> >Comparing conductors with the same length, steel may have much higher
> >resistivity than copper but if the steel conductor's cross-sectional area
> is
> >far, far larger than the copper conductor, its resistance will be lower.
> >
> >Grounding on an iron block or using a steel chassis as a ground return
> isn't
> >necessarily bad; there's lots of cross-sectional area to carry the
current.
> >The problem usually appears as a result of poor connections to the
chassis.
> >Terminals should be clean and tight to get a good connection. Eventually
> >rust and corrosion will degrade the connection so it should be re-cleaned
> >once in a while.
> >
> >Of course, using a heavy copper ground return wire eliminates any
potential
> >problems with chassis grounds.
> >
> >I've even seen one case where fiberglass was used as a "ground". Bad
idea!
> >
> >Regards, Neil Tucson, AZ
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