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flyboy161
Samba Member
Joined: December 26, 2009
Posts: 2091
Location: Perry, GA
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 Posted: Mon Aug 22, 2016 4:43 am Post subject: Re: Proper method for checking voltage drops |
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Thanks, I moisturize. LOL.
Anyway, as for confirming a good ground: there are a couple of ways. First way: Using a voltmeter read from negative battery post to negative battery terminal. No voltage drop. From negative terminal to where it attaches to the pan. Again, no voltage drop. This will settle whether your ground is making it to the chassis. Now using a long jumper lead, measure from that point to your chosen ground. Again you want no voltage drop. This will confirm that you have a ground at the grounding point you chose. I like to use the bumper as a common grounding point.
Second way is typically beyond the scope of most people, but if you have one available use a bonding meter. It is an ohmmeter on steroids. Most ohmmeters are accurate to .2 ohms. That factors in resistance in the leads and internal to the meter. A bonding meter will read down to .0001 ohms. Very accurate, and it tests whether the grounding point is bonded to the chassis. A good bond on is .0025 ohms. Again this is well beyond what most of you have available, but it is another way. But there can be absolutely no voltage on the circuit when checking bonding.
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Sharp64
Samba Member
Joined: August 27, 2015
Posts: 5304
Location: Central Florida
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| Posted: Mon Aug 22, 2016 5:08 am Post subject: Re: Proper method for checking voltage drops |
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I have another thread dealing with voltage drops and it seems like it most likely would make sense to continue it in here maybe for some real world examples? Maybe a mod can make that call and combine somehow?
http://www.thesamba.com/vw/forum/viewtopic.php?p=8185461#8185461 |
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flyboy161
Samba Member
Joined: December 26, 2009
Posts: 2091
Location: Perry, GA
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