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Nov 2, 2005 | 01:32 PM

#11

Paul Niwranski

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Improper? how?

Overkill is more like it. One could not have a better ground as it utilizes both the chassis and an upgraded cable.

Nov 2, 2005 | 01:42 PM

#12

Wagonized

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Quote:

Originally posted by zzzzzzz:
</font><blockquote>quote:</font><hr />Originally posted by Dukk:
I don't like running the ground all the way back to the battery but that is just my opinion.

If one was really concerned about how good the ground plane of the car is I would consider running 0ga from the Powergrid to the floor/frame in the back of the car, then a 0ga from that spot to the frame under the hood and then 0ga from that spot on the frame to the battery.

if i do this i will have the best ground plane ican get yes? [img]graemlins/dunno.gif[/img]

i was going to do this for points in power source desingn [img]graemlins/thumb.gif[/img] </font>[/QUOTE]one of the best planes you can get yea.

Nov 3, 2005 | 09:40 AM

#13

zzzzzzz

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4000 Watt CAFz'r

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Quote:

Originally posted by Merlin:
you'd probably loose points for that. improper wiring i suspose.

tell me why\how is this improper wiring ? [img]graemlins/dunno.gif[/img]

Nov 4, 2005 | 10:44 AM

#14

audioconcepts

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Just a curiousity..Grizz makes the statement that copper is better than steel. But in the case of running dual batteries and one being in the trunk and the amplifiers being connected directly to the trunk battery (both positive and negative)does that make much of a difference then when just using the car chassis for a ground between the two batteries?

Nov 4, 2005 | 02:43 PM

#15

veeman

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I agree copper is a better conductor than steel, but( there's always a but), the amount of steel in your car is significantly more(mass, size etc..) than even a number of 0 awg cables. even though it's not as good a conductor, I would think that the amount of voltage drop would be significantly less just from the sheer amount of steel. Engineers please...

[ November 04, 2005, 03:48 PM: Message edited by: veeman ]

Nov 5, 2005 | 08:57 AM

#16

Paul Niwranski

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^ Your reasoning is correct. In the end it comes down to resistance and voltage drop. The chassis of a car can be an electrically unfriendly place with spot welds and chassis glue making up a large portion of the connections on cars these days.

The dedicated cable avoids any potential problems with the chassis and its suitability as a conductor. It adds cost and system complexity though. I suggested taking that cable and using it as a supplement to the chassis by tying it into the car at the front and at the back to get the maximum ground plane possible.

[ November 05, 2005, 09:58 AM: Message edited by: Dukk ]