On 7 Apr 2009, at 20:14, rigdent wrote: > Another issue is how much peak power do the various machines use ? > How big an inverter and battery bank would we need to be able to > wash under way. One boat we are considering has 660Ah of batteries > charged by a 11A alternator but only a 2Kw inverter. Would that be > man enough ? or should I replace it with a 3Kw one? Then would > the batteries and alternator cope ? We wouldn't be washing while > the engine was off. > > Or should we be considering a travel power type generator ? would > 3.5Kw be enough I seem to recall that they need a constant RPM is > that still the case.
Rather than repeat myself, can I suggest you take a look here? (including the comments) http://sanityagain.blogspot.com/2009/03/electricity.html I think it covers all the stuff you are asking. Basically a 2.5 kVA inverter should be fine, but you need some good engine revs for the alternator output to keep up (I take it you mean 110A, btw - an 11A alternator would be a bit feeble!) Since that post, my attention has been drawn to Chris Gibson's page on battery management systems: http://www.smartgauge.co.uk/controllers.html and I probably won't be fitting an Adverc. HTH All the best Bruce "The superior man knows what is right, the inferior man knows what will sell" Analects of Confucius, circa 500 BCE [Non-text portions of this message have been removed] ------------------------------------ Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/canals-list/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/canals-list/join (Yahoo! ID required) <*> To change settings via email: mailto:[email protected] mailto:[email protected] <*> To unsubscribe from this group, send an email to: [email protected] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
