T&T: Wiring diagram for adding inverter to DC system

[Pascal Gademer]

it depends on the inverter you are using... does it have built in transfer 
switch ?  if not a rotary switch is needed or a pair of dual breaker poles 
with safety slide.  if the boat also has a gneset, you'll need a 3 position 
rotary $witch (shore-inv-gen-off)

the alternator size depends on how much power you will use, how big the 
battery bank and if you have another alternator for the boat DC loads.

i don't think it woudl be feasible or practical to fit a alternator large 
enough to feed the inverter at rated power... i'd go for something big 
enough to supply power for your typical needs plus some margin, and let the 
battery bank handle the occasional extra load.   ex... if you have an AC 
fridge and a few lights, size tghe alternator to handle that plus a 25%. 
If you run the microwave or a coffee maker, the extra power will come from 
the batteries and once done the extra capacity on the alternator will be 
used to recharge what was used.

i have a 3000W inverter and 8 golf cart batteries, but it's recharged from 
shore or genset (3 to 4 hrs a day) since my cruising only involves short 
runs and one to two days on the hook.  If i was running for longer times, 
i'd add an alternator to recharge the inverter bank but dont' need that 
right now.

pascal
miami, fl
70 hatteras 53my


----- Original Message ----- 
From: "John Leroy" <johnl2003@earthlink.net>
To: "Trawler World List Post List Post" 
<trawlers-and-trawlering@lists.samurai.com>
Sent: Sunday, December 03, 2006 8:21 AM
Subject: T&T: Wiring diagram for adding inverter to DC system


> I'm designing a 2500 watt inverter and larger alternator set up for a
> single diesel I'd like to have installed in a Monk 36.
>
> I know I have seen a thread on the optimum manner of hooking up and
> switching such a system, but I can't seem to find it. I also need to
> decide how big an alternator I need, and if the serpentine belt
> (looks about 1" wide) will handle it.
>
> Any help?
>
> John LeRoy
> Pensacola, FL
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