Yeah, I've looked into the draw and supply issues. I was wondering on
how 110vt heating elemetns would perform on 12vts?  would likely require
jumpercables to handle the power/heat

the heater I have installed under my kitchen sink @home is quite
efficent with heating and retaining heat of the 3-4cups capacity hot
water. it only takes a minute to initially heat the water then it just
clicks on and off about once every 20 minutes for a duration of approx
10-15seconds to maintain heated water.

I figure if switched on while 'on route' and not asking it to maintian
hot water all night long.  kick it on in the morning it heats fast.

now add in that when using a campsite with 110vts the double throw
douple pole switches all my 110 from inverter to shore power

I'll report back to the list after/during this season on it's actuall
performance.
that and my 5gal SS soda keg of homebrew with tap into the sink as
well.

Dan stevens

>>> "Pensioner" <al_knoll@pacbell.net> 3/14/2005 12:12:47 AM >>>
Hi dosteven,  that 500w heater will draw 48Amps from 12vdc if the
inverter
is perfect.  But like most things it ain't perfect and has an
efficiency of
conversion that is probably around 85% so you'll draw something like
50A.  A
65AH battery will supply 50A for about 30 minutes (yep, the numbers
don't
add up but, entropy rules and we can't get out of the game.

Wire that sucker with 2AWG so things other than the hot water don't
heat up
too much.

Best,

Al (BSEE, MSEE, dwEEb)