Quote:
Originally Posted by joe231
Sometimes you can get a wire that might have many broken strands in it. You can check the resistance, and it will be ok, but once the circuit is under load the lack of continuous strands will create a current blockage, or corrosion in the connectors can cause the same type of issue. The way to check fir a voltage drop is to put one lead of your meter on an end of the wire and the other lead at the other end of the wire, meter on DC voltage (working on a DC vehicle system), put the circuit under load. The reading on the meter tells you the potential difference. It should be close to zero, a volt or less will still operate.
Basically you are measuring how much voltage is making it through the conductor (wire)
say you are working with a 12 volt DC starter circuit, the starter will not turn the engine over, you suspect the battery cables are not up to par.
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Thanks Joe! This will definitely be usefull... tryin' to chase some gremlins in my corvair.
Thanks for the link Mark... pretty neat idea.