Join Date: Jun 2011
Location: somewhere south of civilization
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Re: Solar heating element for water heater
As a full time liveaboard with the normal number of electric/electronic devices in use much of the time, at anchor or underway, I've never seen my batteries with enough charge to want to dump the charging by the solar and/or windgen. The batteries will settle to around 13.85v after the solar charging has ceased and drop to around 12.6/.4v before the sun comes up, if there's not enough wind for the windgen to produce any real power overnight (less than 5 amps total for the whole night).
You might want to be sure you are actually going to be producing enough excess power to need the dump to heat water or a resistive load before you spend the money and time to install something.
"Any idiot can make a boat go; it takes a sailor to stop one." Spike Africa aboard the schooner Wanderer in Sausalito, Ca. 1964.
“Believe me, my young friend, there is nothing - absolutely nothing - half so much worth doing as simply messing about in boats.” ― Kenneth Grahame, The Wind in the Willows
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