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Subject: TWL: Re: 15 KW Onan
From: Wil Andrews (captnwil@XXX.XXX)
Date: Sun Sep 02 2001 - 12:13:16 EDT
This is just what inverters were made for. Install a 2500W or larger
inverter and wire it properly. Have a proper sized and designed house
battery bank. Run the Fridge, coffee making, TV, and other moderate loads
from the inverter most of the day. Then at a convenient time, start the
genset and charge the batteries. If you don't more load than the battery
charging at that time, build false electric load. Run both the AC and
heaters at the same time. That will dehumidify the whole boat. Burn
electric lights in unused spaces.
To get the best of all worlds, install a 200 amp alternator on the engine.
That will keep the batteries in good shape while underway and using moderate
AC loads powered by the inverter.
If you don't have a thermometer in the genset coolant, install one. Make
the load keep the coolant up to operating specifications. The real problem
is allowing low cylinder temperatures.
All in all, you'll spend more money that you want to, but you'll love the
system. Unless you need AC, you may go days without starting the genset
while cruising.
Good Luck!
CaptnWil
----- Original Message -----
From: "Jim Alexander" <jalexander127@XXX.XXX>
To: "Trawler World" <trawler-world-list@XXX.XXX>
Sent: Sunday, September 02, 2001 11:28 AM
Subject: TWL: 15 KW Onan
> In my search for a suitable vessel I came across yesterday a 44' Yacht
with
> a 15KW Onan. This is the single largest Genset I have seen on a boat this
> size. The boat has dual a/c's, electric Fridge and electric range.
> However, I have always been led to believe that it is extremely unwise to
> run an genset under partial load. Since most other boats this size I have
> seen get by with 8KW gen's, isn't this a little large and would it be
> prudent to operate it just for say firing up the stove for a pot of
coffee?
>
> Jim
>
>
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