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Case Tractors Discussion Forum
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how important is amp gauge in charging circuit?

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david811B

02-02-2004 12:17:03




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Forgive my ignorance generators are before my time. I don't think my amp gauge works, also does it matter which side of meter generator is connected to? I also have no idea if generator works at all. can gauge be by passed? or is it necessary to have it for proper charging?-David




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Roger (Mi)

02-06-2004 05:11:20




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 Re: how important is amp gauge in charging circuit in reply to david811B, 02-02-2004 12:17:03  
Volts are basically the same as pressure.
(12 pounds of pressure are more than 6 pounds of pressure) Amps are basically the same as volume. (a river flows more volume than a creek)
Because alternators have more volume than generators, it's easier to indicate the charging status by using volts instead of amperage.
Neither a volt meter or amp meter is necessary for charging to occur. An oil gauge is not necessary for a motor to run. Gauges just give useful information to the operator.

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Chicken

02-03-2004 16:03:50




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 Re: how important is amp gauge in charging circuit in reply to david811B, 02-02-2004 12:17:03  
Amp gauges are pritty simple if you hook them up backwards and the generator is charging they show a discharge on the gauge, just swap the wires and they will show a + current flow. need them for a charge cercuit? NO. they are just a gauge like a volt meter not needed just a convenance.



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Roger (Va.)

02-02-2004 21:30:00




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 Re: how important is amp gauge in charging circuit in reply to david811B, 02-02-2004 12:17:03  
You can tell if the generator is charging by attaching a handheld voltmeter to the battery and reading the voltage without the engine running. Then start the engine and the voltage will increase a volt or two if the generator is working. This is a general test.

Also, what we think is a amp gauge on a vehicle is often a voltage gauge.



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Sam#3

02-02-2004 15:32:07




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 Re: how important is amp gauge in charging circuit in reply to david811B, 02-02-2004 12:17:03  
I'll try to answer your questions:
... does it matter which side of meter generator is connected to? The meter is a polarized device, that is the positive side of the meter connects to the positive end of the charge circuit.
... can gauge be by passed? Yes, it can be.
... is it necessary to have it for proper charging? No it isn't provided the charge lead is completed. See second question.
Electrically the ampmeter is part of the charge circuit and provides the operator information on the condition of the circuit. (Charge circuit is madeup of generator/alternator, regulator, and battery.)

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