SD Altenator Output
Freshman User
Joined: Sep 2002
Posts: 33
Likes: 0
SD Altenator Output
130 is right. However most non-marine alternators don't rate their alternators under realistic conditions which generally is an alternator that is running much hotter than when it was tested.
So after some heat up time it's likely that your not going to see a full 130 amps, which is RPM dependant as well.
In marine they build them to output much more amp. at lower RPM and test them under higher temp conditions to come up with better numbers.
Having said all that, generally a 'common vehicle' alternator of 130 amps is still going to put out more amp's than say a 100 amp or 75 amp in a vehicle.
It's nice to see that Ford routinely puts a 130 amp unit in rather than have to order one.
So after some heat up time it's likely that your not going to see a full 130 amps, which is RPM dependant as well.
In marine they build them to output much more amp. at lower RPM and test them under higher temp conditions to come up with better numbers.
Having said all that, generally a 'common vehicle' alternator of 130 amps is still going to put out more amp's than say a 100 amp or 75 amp in a vehicle.
It's nice to see that Ford routinely puts a 130 amp unit in rather than have to order one.
Senior User
Joined: Nov 1999
Posts: 149
Likes: 2
From: SW Illinois... near St. L
SD Altenator Output
Well... If it's 130 Amps, then I got shafted from the factory with a 95 Amp unit. I had to replace it to support that #2 gauge wire that feeds my ham radios and amps! Gotta love that 350 amp selise-neville(sp?) amp!
Dave
'02 F250 SD SC
Dave
'02 F250 SD SC
