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Old 03-03-2014, 07:06 AM   #21
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IF we could convince mfg to install universal motors , that work on AC or DC , as found sometimes in chain saws , low voltage dock life would be easier.

The usual motor eats power in watts , lower the volts the amps go up, raise the volts the amps go down , the watts are the same.

The universal motors are happy with lower voltage , the just produce reduced power , but they work!

Since todays air cond is in a sealed can , and universal motors have brushes , no chance , unless you go big buck and build an air cond for yourself.
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Old 03-03-2014, 08:47 AM   #22
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Boosting a low voltage caused by the voltage drop of the long run will yield lower amps.
Not really. Your boat will get the power it needs at the voltage it needs up to the capacity of the breaker on the dock. True, if you're trying to draw 50 amps and you've inserted a transformer, the dock breaker should trip but how often does that situation occur?

Just make a note not to run the central vacuum at the same time you're using all four stove burners and the oven and the AC and you should be fine.
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Old 03-03-2014, 10:32 AM   #23
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For long periods on the hook you really need to take a page out of a sailor’s book, and simplicity is the best approach. Special well insulated cold plate fridge, a few solar panels and conservative life style. Outside that trying to store large amounts of batteries and then attempting to full recharge them is an exercise in futility.

Now I’m not saying life on the hook needs to be without luxury, just feel it needs to be planned well. We run our gen for a good amount of time while on the hook, ours thankfully is rather quiet, but I would not call it life off the grid and we typically only do 2-4 days at a time, so packing a cooler with ice and drinks cuts back on gen time.
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Old 03-04-2014, 07:09 AM   #24
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Running the main engine is just fine for topping up the batts , as long as its PUSHING the boat at the same time.

Sitting for a summer has one requirement , but cruising folks can easily work out a way for a few days between battery charges.

In out 90/90 Mechanical Eutetic (cold plate) refrigeration allows 3 days of sitting and on the 4th , the ice cream is up to 15F , so its time for a 2 hour put to the next spot.

On our launch the propane fridge , and single 85W solar allows unlimited time between engine operation.

At times he boat sits at a mooring all summer , and cold beer and frozen ice cream awaits .

For folks with a larger 50-80? ft boat the use of a mooring with a cheap slip space for a dink like a B Whaler can be a great life style , at not much more than the cost of a slip for the 13 ft boat.

Water , UPS and mail service , use of the dump station , the Dumpster and secure parking for the price of a 13ft slip!!

BUT the boat must not be a power hog , and outfitted with the no noisemaker lifestyle predominant.
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Old 03-04-2014, 07:23 AM   #25
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For long periods on the hook you really need to take a page out of a sailorís book,............
The OP is at a marina and paying for shore power not on the hook.
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Old 05-22-2014, 01:46 PM   #26
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been a bit and I finally have an answer on what has been going on.. at least for the power drop issue if anyone has been wondering

turns out that the marina power from the distribution box runs 275 feet from the last junction box. The current wire is a #8.... calculations say that to provide 33 amps of service over that distance one should be using a #2 wire... so therein lies the explanation of the power drop issue.

Marina got a quote for running a new line and I think the manager went into shock for a while... fortunately another slip without this issue is opening up and we will likely move there, allowing the marina to "kick the can down the road" so to speak for a while longer.... or until someone else wants to live at that spot.
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Old 05-24-2014, 06:05 AM   #27
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Sounds like the marina could afford standard wiring if all the slips has electric use meters installed.
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