there is my 1/2 penny worth the setup i havefor protection just in case i have that marinated stuff and shut off the main switch battery without thinking. I got a small garden tractor battery from walmart last winter for $10 and connected it full time on the supply/charge calble. If iturn the switch to off position while the engine is running (dumb) there is still a battery that the current wil flow and protect the diodes cheap but effective. Yanni Marinated S/V Princess Thalia Columbia 8.7 #73 On the Hard Mayo MD
________________________________ From: Jim <[EMAIL PROTECTED]> To: [email protected] Sent: Tuesday, November 25, 2008 6:55:46 AM Subject: Re: [Liveaboard] A few more questions Norm of Bandersnatch wrote: > See annotations in [brackets]. > Likewise in <> > Norm > S/V Bandersnatch > Lying Julington Creek > 30 07.695N 081 38.484W > > > > > (snip) >> Many installations have a large wire directly from >> the battery to the starter and I've seen the Output from the alternator >> go to this post also. That's a good place to connect it if you have the >> starter circuit running through a battery disconnect switch. (Which I >> don't recommend for larger engines). >> > > > [I don't understand this. The output of the alternator must not have its > load removed while operating or the output diodes will be destroyed so > connecting it to a battery via a switch that could disconnect it from the > battery is a no-no unless the switch in question has a field disconnect > switch in use.] > > < As long as the sense wire and the output of the alternator are tied together, the output diodes are protected. If there isn't any load, like a battery then there just won't be any current flow except the slight amount the sense line draws. The voltage at the output terminal will be regulated. If the sense line is connected to the battery and the field becomes disconnected then I agree. > > > > <What I didn't say about all possible installations would fill a > book. ;)> > > [Some diesel installations do not have an "Iginiton Switch", and such a > switch could be switched on when the Diesel engine is not running. I use a > two-terminal oil pressure switch instead to switch both the alternator > field and the engine instruments/alarms. (I have a Start switch and kill > the engine with a {seperate from the single-lever engine control}engine > speed [basically an idle control]control.] > > > <I agree> > [I would add, never disconnect the alternator output from its load when it > is operating.] > > [There was some discussion on the List some time ago about the wisdom of > using a switch to disconnect the starter from the start battery to > disconnect the starter in the case of a short circuit fire. The general > consenus, and I can't remember the details, was NOT to have a switch, fuse, > or breaker in that line. Perhaps a large wire cutter nearby would be > useful. Personally, my battery terminal clamps have wing nuts squeezing > them on the posts the idea being that I could get one off quickly if > needed.] > > Thanks for the comments.. Jim. _______________________________________________ Liveaboard mailing list [email protected] To adjust your membership settings over the web http://www.liveaboardnow.org/mailman/listinfo/liveaboard To subscribe send an email to [EMAIL PROTECTED] To unsubscribe send an email to [EMAIL PROTECTED] The archives are at http://www.liveaboardnow.org/pipermail/liveaboard/ To search the archives http://www.mail-archive.com/[email protected] The Mailman Users Guide can be found here http://www.gnu.org/software/mailman/mailman-member/index.html
_______________________________________________ Liveaboard mailing list [email protected] To adjust your membership settings over the web http://www.liveaboardnow.org/mailman/listinfo/liveaboard To subscribe send an email to [EMAIL PROTECTED] To unsubscribe send an email to [EMAIL PROTECTED] The archives are at http://www.liveaboardnow.org/pipermail/liveaboard/ To search the archives http://www.mail-archive.com/[email protected] The Mailman Users Guide can be found here http://www.gnu.org/software/mailman/mailman-member/index.html
