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Old 08-08-2017, 11:21   #1
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Join Date: Jan 2012
Location: Pittsburgh, Pa. Boat Antigua
Boat: Oyster 49
Posts: 73
connecting battery charger to 240v on a US wired boat

My boat has a US 125/250v 50A shore power. I want to be able to connect to 240v 16A European shore power. My plan is buy a xantrex worldwide battery charger to keep my batteries charged, enabling me to run lights, the fridge/freezer and water pumps etc off my DC power system. To run the air conditioner and water heater I plan on using my gen set. For other 120v appliances I will use my 2000w inverter.

I plan on hard wiring a 16A European shore power cable into the battery charger. The cable will only supply the battery charger. My question is what protection should I have on the shore power cable - will a GFCI suffice or do I need an ELCI. Also, should I connect the ground on the 240v shore power cable to the galvanic isolator on my 125v main shore power system, or would I be better having a separate isolator. I only intend to use the 240v system when at non US wired marinas - it may be hooked up for several weeks at a time when I leave the boat at a marina - the main power drain will be for the fridge- freezer - probably around 8 to 10A on my 24v house system.
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battery, boat, charger

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