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Shore Power

Old 05-28-2004, 07:51 PM
  #1  
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Default Shore Power

I own a 95 Grady White 27 Sailfish with no shore power (three batteries). I'm interested in adding shore power and the following accessories; battery charger (inverter maybe), water heater, micro wave, and outlets. Any articles or threads that have previously addressed this subject? Cost? Do-it-myself? Galvanic isolators? Wire required? Amperage required? AC/DC Panel? Any info or advice would be appreciated! I fish, but my wife wants a micro and a coffee maker!!
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Old 05-30-2004, 10:21 PM
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Default RE: Shore Power

The standard shorepower receptical is 30 amps. Blue Sea makes a lot of different panels that you can get from your local marine store. Wire size from the inlet to the panel would be 10ga. If the boat is not going to be left in the water then I would not worry too much about the galvanic isolator. Nice to have but not absolutely necessary.
Wiring to the recepticals, battery chargers would be either 12 or 14 ga. Cost would be around $300 for material depending on how fancy of panel you buy. Check ABYC website for proper wiring procedures.

Good luck
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Old 05-31-2004, 12:22 AM
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Default RE: Shore Power

When I rewired my boat I went with a Xantrex Freedom 10 (1000 watt) Inverter/Charger for the house batteries. I have a primary AC Panel for the ship/shore power and a subpanel for the inverter outlets. The inverter outlets run the Microwave, coffee maker and laptop. The primary panel runs some outlets, air, refrigerator, water heater, etc. When connected to shore power, the inverter is a charger and has an AC pass through feature so the inverter outlets run as regular outlets. The placement of the inverter within close proximity to the batteries was one of the issues I had to contend with. The size of the wires get pretty substantial for runs in excess of 6'. I also opted to seperate the AC and DC panels rather than going with a combined panel. AC power and cables run down the stbd side - DC down the port. I also installed a galvanic isolator since I expected to be at various marinas up the coast.

I used Motorboat Electrical by John C. Payne as a guide. Used mostly Blue Seas stuff ordered on line from http://www.fisheriessupply.com/online/default.asp
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Old 05-31-2004, 12:28 PM
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Default RE: Shore Power

And I have a much simpler system in our smaller boat (23'), that might be all that you would want. I have the common stainless power inlet by Marinco, it is wired directly over to a double breaker, one that breakes both sides - hot and neutral - and from there the power goes straight to a GFI recepticle that is in the cabin. It would take care of your microwave or whatever. From there the GFI protrected line out goes to my battery charger but I could just as easily run a line from it on to a water heater as well. It is a simple system but its all I needed on our little boat for those times when we overnight in it and of course its plugged in all the time when its home because we use a smart-charger.

Thom
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Old 05-31-2004, 06:41 PM
  #5  
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Default RE: Shore Power

Thanks guys, you've given me some good ideas to think about! Now to get up the gumption (and money) to tackle the project!

Dave
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