Re: [DML] Why Volts gage not Amps?
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Re: [DML] Why Volts gage not Amps?

Voltage is a better measure of the capability of your electrical system 
than amperage (current).  Amperage changes with load - turning on 
your lights, A/C, blower, wipers, and radio will increase the amperage
in the system.  Being able to tell if the voltage drops when load is applied 
tells you if your battery, alternator or voltage regulator needs attention.  

You can run over-voltage if your voltage regulator has failed, allowing
your alternator to provide a higher voltage than the system can handle.


-------------- Original message from "daviddelorean" <daviddelorean@xxxxxxxxx>: -------------- 

> Just out of curiosity, why do DMCs (and most cars) have a gage that 
> measures the 'volts' of the electric system and not the 'amps'? As I 
> understand it, volts is the resistance in the loop, bascially how fast 
> the electrons are traveling thru the loop. Amps is the actual amount of 
> power in the loop. So wouldn't it be better to know the actual output 
> of the alternator? 
> Also, in what instance would there be too high voltage in the system? 
> Obviously if your alternator died the volts would drop below 12, but in 
> what case would they go too high? 

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