Cruisers Forum

Join CruisersForum Today

  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on Cruisers Forums. Advertise Here
Thread Tools Search this Thread Rate Thread Display Modes
Old 18-09-2016, 14:29   #1
Registered User

Join Date: Apr 2011
Posts: 45
altenator power draw

can anyone enlighten me on just how much HP/ energy is required to run an altenator, more specifically if for instance it is fixed prop/ shaft driven and if say altenator is 35 amp output would it require more HP/ energy if it were 24v as opposed to 12v, naturally not expecting full altenator output but anything over 4 or 5 amps is a big plus. Back in the 80's did a tour through the southern ocean Auckland >>Punta Arenas etc etc on a steel boat with a shaft altenator and that kept up with things pretty well electrically
sfnz is offline   Reply With Quote
Old 18-09-2016, 14:57   #2
Registered User

Join Date: Jun 2013
Location: canada
Posts: 2,593
Re: altenator power draw

1 hp = 746 watts, (+ inefficiencies ) voltage doesn't matter only total power.

so yes a 24v 35a alt would take twice the power as a 12v 35a alt. or the same as a 12v 70a alt

about 1hp
smac999 is online now   Reply With Quote

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Which charges my battery faster, generator or altenator jbinbi Electrical: Batteries, Generators & Solar 14 03-07-2016 12:08
ICOM 802 Power Draw When Off SvenG Marine Electronics 36 09-12-2013 14:58
How Much Power does your Fridge Draw? o_q Electrical: Batteries, Generators & Solar 25 24-08-2013 21:34
.4 amp draw on batteries w/ shore power AC on benjiwoodboat Electrical: Batteries, Generators & Solar 4 12-04-2011 13:18
Anyone using a low power draw laptop? Christian Van H Navigation 23 17-12-2008 09:32

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 22:55.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.