Alternators By Quick Start Automotive Electric™ Your #1 Source for High Output Alternators, Stock Alternators,  Starters, Components and more!!! Phone 1-616-606-5045   www.AlternatorParts.com  email: info@qsalts.com | HOME PAGE |          How much engine horse power does an alternator take to make power? How much power does it take to run an alternator? Please visit www.pinnaclewindpower.com when you have finished with this site

An alternator typically takes about 1 HP (horse power) for every 25 amps of power generated. So, a 100 amp alternator will require about 4 HP at full output. Most alternators do not operate at full output for very long.

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