Actually, the tough part is getting enough amps to do the bulk charge phase. Once you have tapered that down, the last 20% is soaking up low amps for a long time. A single big bank is more efficient at the bulk charge if your alternator and regulator are up to it.
Jim Watts Paradigm Shift C&C 35 Mk III Victoria, BC On 30 January 2015 at 15:34, Josh Muckley via CnC-List < cnc-list@cnc-list.com> wrote: > Edd, You might consider keeping the house bank broken up with the ability > to combine. As the others have said, a deep discharge is bad but getting a > charge above 80% is more difficult and requires more current on larger > banks. Maybe for race nights you could use "House #1" equal to > 75-100Ahrs. When you go cruising you could combine them or switch to > "House #2" and keep #1 as a reserve. > > To help answer your question about the echocharge not getting a chance to > charge the house bank. I believe the echocharge has a threshold setting > which dictates when to "switch over". I am accustomed to seeing the > alternator directly wired to the battery. I believe that this is the one > exception to the ABYC fuse requirement. It takes almost no time for the > starting battery to recover its charge so very shortly after engine start > the echo starts charging the house. > > Edd, maybe you or someone else can make an argument for an echocharge vs > an ACR. I believe the ACR can provide more current and may be cheaper. > > Josh > On Jan 30, 2015 11:46 AM, "Edd Schillay via CnC-List" < > cnc-list@cnc-list.com> wrote: > >> Listers, >> >> One of my Spring projects is to rewire the main DC circuits. >> Specifically, I’m looking to change from the 1/2/All system to a >> Starting/House switch and use an echo charger for the house bank. >> >> I know others on the list have done this. Does anyone have a wiring >> diagram they can share? I am especially interested in how to wire in the >> alternator, the shore-power battery charger and the solar panel. >> >> I’m also looking to, if space permits, use a 12V battery for the starter >> and 6 or more golf cart (6V) batteries for the house bank. >> >> 12 weeks to launch! >> >> >> All the best, >> >> Edd >> >> >> Edd M. Schillay >> Starship Enterprise >> C&C 37+ | Sail No: NCC-1701-B >> City Island, NY >> Starship Enterprise's Captain's Log <http://enterpriseb.blogspot.com/> >> >> >> _______________________________________________ >> >> Email address: >> CnC-List@cnc-list.com >> To change your list preferences, including unsubscribing -- go to the >> bottom of page at: >> http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com >> >> >> > _______________________________________________ > > Email address: > CnC-List@cnc-list.com > To change your list preferences, including unsubscribing -- go to the > bottom of page at: > http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com > > >
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