Re: Grounded circuit troubleshooting

Wow.....

Are you two fools for real?

It's an old 12 volt car with a short.....

What's he gonna do, blow a fuse? LOL!

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Aug./05 http://www.imagestation.com/album/index.html?id=2120343242
(More Off Road album links at bottom of the view page)

Shep wrote:
>
> Ageed, for sure!!
> "Lawrence_Glickman" <Lawrence_Glickman@xxxxxxxxxxx> wrote in message
> news:tqlam1hlj0c3r17r0khca46f8hdogu8qk0@xxxxxxxxxx
> > On 30 Oct 2005 22:48:19 GMT, ag384@xxxxxxxxxxxxxxxxxxx (William R.
> > Watt) wrote:
> >
> >>
> >>A test light can be used. It's simpler and cheaper, just a light bulb with
> >>two wires comming from it. Touch the wires to two pices of metal and if a
> >>current is flowing it will illuminate the bulb.
> >
> > If there is a voltage differential between the two pieces of metal
> > touched with the probe wires, then a voltage differential will be
> > displayed.
> > Example:
> > 1 wire is at 100 volts
> > the other wire is at 300 volts
> >
> > what do you think you will read between these wires if these wires are
> > in an open circuit?
> >
> > The answer is:
> >
> > between eachother, 200 volts
> > between100 volts and earth ground or neutral safety bus, 100 volts
> > between 300 volts and earth ground or neutral safety bus, 300 volts
> >
> > This has nothing at all to do with current. There can be zero current
> > flowing in the wires, and you will still measure this voltage.
> >
> > Amperes is the unit of measurement for current.
> >
> > What if -both- wires are alive with 300 volts? What will you read?
> >
> > ZERO VOLTS if you just put your probes on the two wires, each carrying
> > 300 volts!
> >
> > IOW, if you don't know what you're doing, DON'T DO IT.
> >
> > Lg
> >
> >
> >>
> >>"dontlookback" (dmemail@xxxxxxxxxx) writes:
> >>> I have a 71 Opel GT with a dead short in the instrument panel lunination
> >>> circuit. What is the best way to isolate the ground as it seems that
> >>> everything is tied together into one big mess. Are there any free
> >>> internet sites that explain basic ammeter use and trouble shooting of
> >>> grounded circuits. My experiance with meter use is none and would like
> >>> to
> >>> learn more in this area.
> >>>
> >>> Thanks
> >>>
> >
> >
>
> ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==----
> http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups
> ----= East and West-Coast Server Farms - Total Privacy via Encryption =----
.

Relevant Pages

  • Re: 2 amps together buzzing?
    ... >Dave Curtis wrote: ... neutral has volts on it referenced to ground. ... The spacing of wires in BX is quite uniform. ... You're mixing Signal gnd with equipment gnd. ...
    (alt.guitar.amps)
  • Re: Onan Generator low operating voltage
    ... Final resolution in the low volts saga: ... Replaced the shore power plug and brought the voltage drop down to ... pulled the wires in the junction box in the rear bumper ... the genset does indeed put out an adequate voltage even with 2 ...
    (rec.outdoors.rv-travel)
  • Re: Grounded circuit troubleshooting
    ... My post of AC or DC was a valid query, since though the discussion centered on automotive systems, we were also talking up to 300 volts, well beyond what would be commonly found in automotive systems. ... Differential voltage measurements between two AC voltages bring into play a plethora of variables that the casual observer would'nt anticipate. ... Touch the wires to two pices of metal and if a current is flowing it will illuminate the bulb. ... between 300 volts and earth ground or neutral safety bus, ...
    (rec.autos.tech)
  • Re: 2 amps together buzzing?
    ... neutral has volts on it referenced to ground. ... that's where the ground drain wires meet neutral. ... > is induced voltage on the neutral because it is running right ... is that death caps to neutral aren't ground ...
    (alt.guitar.amps)
  • Re: Gottlieb System 80B Monte Carlo - Sometimes Relay Coils Lock on at Power Up
    ... Yep, seen it many times, it's a connector issue involving the ground ... for 5 volts. ... I can send you pics of the LED mods if you choose to ... You will notice all the ground wires attach to the ...
    (rec.games.pinball)