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Re: Amps drawn



On Wed, 5 Jun 1996, Stephen Williams wrote:

> 	So, if you have 55w driving lights, and your battery puts out 
> 12v, the conformulation would be:  110w / 12v = 9.17amps.

I have found from actual current measurements that the wattage ratings 
are not very accurate, so you would be best to use a good Fluke (or 
similar meter) and actually measure the voltage and the current, to 
determine the wattage.

The above formula also illustrates why relays work so well.  They get you 
more volts at the light, which reduces the current.  The higher voltage 
also gives you a brighter, whiter light.  You can also figure that a good 
alternator is actually making 14v until it really gets loaded down.F

Later,								
Graydon D. Stuckey								
graydon@apollo.gmi.edu								
Flint, Michigan   USA
'86 Audi 5000 CS Turbo Quattro, GDS Racing Stage II