"Wayne.B" wrote in message
...
On Mon, 21 Mar 2005 17:09:48 -0500, "Doug Dotson"
dougdotson@NOSPAMcablespeedNOSPAMcom wrote:

Nope. Our Pelonus ceramic cube heater draws around 110A. With a
900AH battery bank you would be lucky to get 4 hours. Probably
less since it is drawing much more than the 20 hour rate from which
your 900AH rating is based. We have a 500AH+ bank in our mobile
canvas shop. The heater is good for about an hour.

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That assumes continuous duty. Unless you have a really large cabin
and/or a really cold night, the heater is actually on less than 30% of
the time. I had a 440 AH bank on my old boat and we would usually
make it through the night. I could hit the generator start button in
the morning without getting out of bed. :-)

Depends upon alot of things, like the outside temperature, the insulation
of the boat, etc. I keep an electric heater on all winter and if the temp is
below 40, it runs alot more than 30%.