Ask the Rebuilder

AskTheRebuilder => Alternator Questions => Alternator FAQ => Topic started by: drew on November 23, 2009, 05:04:07 PM

Title: How much power does it take to run an alternator?
Post by: drew on November 23, 2009, 05:04:07 PM
[h=1]How much engine horse power does an alternator take to make power?[/h]
[h=2]How much power does it take to run an alternator?[/h]
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.