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Old 21st July 2006, 03:40 AM   #1
Jexx is offline Jexx  United States
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Default Grounding to battery in high power systems

I was reading my owner's manual for my PPI PC2350 and it claims if an amplifier is over 600watts RMS, an additional grounding wire should be run to the negative terminal of the battery to prevent the amp from overheating and/or engine noise problems.

How accurate is that?
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Old 21st July 2006, 04:28 AM   #2
Glowbug is offline Glowbug  United States
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As long as you have a good ground return through the chassis, and have upgraded the battery-to-chassis ground with a larger gauge, you're fine.

If you don't have a lot of metal on the frame, and can't get a good chassis ground - then yes, run a seperate wire back to the negative post.
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Old 21st July 2006, 04:47 AM   #3
TO-3 is offline TO-3  Peru
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Default Re: Grounding to battery in high power systems

Quote:
Originally posted by Jexx
I was reading my owner's manual for my PPI PC2350 and it claims if an amplifier is over 600watts RMS, an additional grounding wire should be run to the negative terminal of the battery to prevent the amp from overheating and/or engine noise problems.

How accurate is that?
I always run a return to my battery. Some cars have poorly conduting chassis and end up causing ground-loops. I run a cable from the battery and then ground the chassis at the spot that I ground the amps.
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Old 21st July 2006, 12:21 PM   #4
vadi is offline vadi  Austria
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Default Re: Re: Grounding to battery in high power systems

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Originally posted by TO-3


then ground the chassis at the spot that I ground the amps.

Hi!

Could you pleas explain that?

I simply grounded both amps via cables to the battery and the HU via chassis. Is that a problem?


Regards,

Sladjan
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Old 21st July 2006, 03:34 PM   #5
TO-3 is offline TO-3  Peru
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Default Re: Re: Re: Grounding to battery in high power systems

Quote:
Originally posted by vadi



Hi!

Could you pleas explain that?

I simply grounded both amps via cables to the battery and the HU via chassis. Is that a problem?


Regards,

Sladjan

I run a ground from my battery to the chassis at the point where I ground all of my electronics. I used to have a Saturn that had a body with high resistance. I later found that the body is spot welded together and at those points the resistance is increased which will cause a ground-loop. I figured why not ground each panel to the battery? The metal frame still has a good ground but adding a solid retun is the best way to ensure that the ground has minimum resistance.
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Old 22nd July 2006, 04:41 PM   #6
vadi is offline vadi  Austria
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Thanks!
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