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overloading an earth point

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=106342
Printed Date: September 16, 2025 at 6:37 PM


Topic: overloading an earth point

Posted By: bemendozer
Subject: overloading an earth point
Date Posted: July 24, 2008 at 10:58 AM

Is it possible to overload an Earth Point in a car? I am wiring up a 900watt amp and rather than make an Earth Point I have found one in the back quater but it is being used by the rear lights and other small items. If I connect my amp to this earth point will it blow? I have connected the amp to this point but just to test the amp before the install went ahead and nothing blow but I don't know what will happen when the volume is turned up.

Cheers




Replies:

Posted By: haemphyst
Date Posted: July 24, 2008 at 12:05 PM
Just like ANY curent path, yes, you can "overload" it. The same as you can try to pull too much current from a battery post. This is simply an issue of excessive voltage drop. I would not use that point ever, though, as each time you step on the brake pedal, you run the risk of a "pop" from voltage or current spikes.

Find a different, and more appropriate, ground point.

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It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."



Posted By: eclipser93
Date Posted: July 28, 2008 at 12:08 AM
Well Put


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