A neat way to remember the formula is PIE.
P=IE
Power = I (amps) times Electromotive force (volts)
thus
260 watts = 21.66 amps times 12 volts
or
260watts/12volts=21.66amps
Look what happens if your voltage is low....
260watts/10volts = 26 amps
Gary
Grafton, OH
1991 +8
PS: And the British drink warm beer too,
At 02:34 AM 12/15/98 -0800, you wrote:
>The halogen headlamps on my car have the standard 60 watt high beams. If
>your car has two headlamps @ 130 watts each,then by the formula, watts=
>volts(amps), 260=12x then the power consumkption fo those lamps will be 21.5
>amps. You can calculate the power consumption of all of the other
>electrical consumers by the same method, add them up and you sill see how
>much generating capacity you need. Regards, Greg
> --Original Message-----
>From: greg solow <gregmogdoc@surfnetusa.com>
>To: LSelz@aol.com <LSelz@aol.com>; arthart@bell-labs.com
><arthart@bell-labs.com>; pdburket@intrepid.net <pdburket@intrepid.net>;
>morgans@Autox.Team.Net <morgans@Autox.Team.Net>
>Date: Thursday, December 10, 1998 1:57 AM
>Subject: Re: Halogen headlamps
>
>
>>The standard Lucas generator use on a Morgan +4 is rated to 22 amps
>>continuous output. We have found that it will tolerate generating 28 amps
>>continuously if it is in good shape to begin with. At 30 amps it will
>start
>>to throw solder and will shortly thereafter fail entirely..To adjust the
>>regulator so that the max. output is 28 amps;
>> Fully charge the battery and make sure that it is in good condition with
>>clean terminals and good ground conections. Connect a ampmeter in series
>>between the "D" terminal of the voltage regulator and the "D" wire from
>the
>>generator. (disconnect the yellow "D" wire that comes from the generator
>>"D" teminal and connect it to one of the ampmeter leads, connect the other
>>ampmeter lead to the "D" terminal of the regulator.
>> Remove the cover from the voltage regulator.
>> Do not disconnect any other wires.
>>
>> Start the engine and turn on all of the electrical consumers at the same
>>time. I have Lucas Halogen headlamps, "Square Eight" halogen driving
>lamps,
>>heater, electric defrosters, and of course wipers and tail lamps.
>> Bring the engine up to about 3,000 RPM and read the ampmeter. Hold the
>>RPM steady for about a minute and a half to allow the reading to stabilize.
>>To adjust the output use the screw on the back of the regulator farthest
>>away from the centerline of the car. Screwing it in will raise the uotput
>>and backing it out will lower it . The adjustment is VERY sensitive. 1/16
>of
>>a turn will make a meaurable difference. With all of the consumers that I
>>have, the generator cannot keep up and the system will run in a state of
>>constant discharge and the battery will eventually go dead if I don't turn
>>something off! But with the headlights, heater, defrosters and wipers, the
>>generator will just stay even. I purchased my car new in 1965, have
>115,000
>>miles plus on it , in addition to 50 or so race weekends and am on my 3'rd
>>generator. One I burned out because I had adjusted the amperage to high
>>and I think that 6800 RPM is probably a little hard on them also.
>> Regards, Greg Solow
>>
>>-----Original Message-----
>>From: LSelz@aol.com <LSelz@aol.com>
>>To: arthart@bell-labs.com <arthart@bell-labs.com>; pdburket@intrepid.net
>><pdburket@intrepid.net>; morgans@Autox.Team.Net <morgans@Autox.Team.Net>
>>Date: Wednesday, December 09, 1998 4:19 PM
>>Subject: Re: Halogen headlamps
>>
>>
>>>Art -
>>>
>>>Will the standard Lucas generator pull the 130W halogen lamps you mention?
>>>
>>>I'm considering running them on my car via a relay, but would like to keep
>>the
>>>stock generator and regulator (mainly since I just replaced them at some
>>>considerable cost). I don't want to be throwing solder, though. Thanks
>>for
>>>your thoughts.
>>>
>>>
>>>Lannis
>>
>>
>
>
>
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