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Re: Re: Re: Re: To Settle an Argument
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Posted by ltf in nc on August 27, 2000 at 19:21:48 from (206.228.215.164):
In Reply to: Re: Re: Re: To Settle an Argument posted by Wardner on August 27, 2000 at 12:21:46:
Most of us will agree that a starter is a Direct Current (DC)electic motor. One watt is the rate of work represented by a current of one ampere under the pressure of one volt. This is the standard used in the U.S.A. (746 watts are required to make 1 horsepower). An electric motor will draw the required power, provided it is available from the source, to accomplish the task. If the starter design and load was for 1 horsepower we would have the following. In a six volt system we would need 124.33 amps to power the starter. 746 watts divided by 6 volts equals 124.33 amps. In a twelve volts system we would need 62.17 amps. The higher voltage delivers the currrent with less losses therefore we get the improved cranking that we are familiar with from the 12 volt system. Low voltage in either the 6 or 12 volt will not permit the starter to function properly because the amperage will have to increase in order to make the wattage required. Overheating of components is the consequence. If the amperage is not available from the source (battery) then even if the voltage is present, the wattage requirement cannot be met, therefore the starter will not develop the designed horsepower and the function will not meet the requirements resulting is slow turning and for short durations usually. Hope this helps.
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