Re: Alternator Question
A Watt is a measure of power. There are 720 Watts in a horse power so converting your 3000 Watt Amp into the number of horses it is going to take to drive it yields 4.166 horses subtracted from the rear wheels. Watts are also related to Amperes by the relationship known as PIE, or Volts times Amps equal Watts.
So doing the math we see that for the average 14 volt automotive system (only the battery puts out 12 volts) you will need 214.29 more Amps than you currently have coming out of your factory installed O.E.M. 72 Amp alternator for a total of 286 Amps. I went on line to AutoZone and DAP's site but they don't stock one that size. The 190 Amp alternator in my 9C1 police car requires a special bracket to bolt it to the engine. They (the oversized medium truck alternators) are available new from Delco offered in up to 250 Watts per alternator which means you will have to figure out how to mount two of them on your engine.
Luck would have it that Home Depot is running a special on Home Generators. Unfortunately it is only the 2,700 Watt 5 horse Honda version. You may have to spring for a 7 horse Wisconsin which puts out 3,500 Watts. You will need a utility trailer from Sears and six industrial strength 12 Volt diode rectifiers to convert the A/C power to DC. The good news is with the extra 500 Watts of power left over you can run some neon lights.
Larger Dave the retired engineer.
Last edited by Larger Dave; Jan 6th, 06 at 01:41 PM.