Getting confused on an electrical system - 12v, 24v, 115V, 220V... - SailNet Community

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  #1  
Old 10-07-2007
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Getting confused on an electrical system - 12v, 24v, 115V, 220V...

So a boat we're looking at - A Hallberg-Rassy - has so many electrical systems I'm getting confused. Here's the equipment list:

- Fischer Panda 6kw generator (yes, a Panda )
- 220V Shore Power
- Xantrex Inverter 1kw 24VDC to 115VAC
- Mastervolt battery charger 12v/30A
- Mastervolt combi 24V 100Amp charger 24VDC/220 AC Inverter
- Mastervolt converters (2) 24-24VDC (1) spare (was this a typo? Maybe supposed to convert 24-12?)
- Mastervolt Monitor Power
- The boat has several different outlets - 220V, 115V, 24V and 12V scattered throughout. Wherever a 12v plug exists a 24v plug also exists.

So... I'm assuming that since this is a European boat, that would be the reason for all the different types of voltages? I've seen 24v windlasses, but not too much other 24v stuff. On this boat, they seem to be treating 24v the same way we treat 12v. There's a 24v microwave, etc.

Can anyone help me make some sense out of all of these systems?

Thanks! Chris
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In Europe they use 220 and 24 volts much more than we do here in North America. The boat is set up to be able to cruise the world. Remember to pack lots of beer
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Old 10-07-2007
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Sailorman is correct. The boat is set up to travel through U.S. and European power sources. Sounds like they did it right. You just have to pay attention what you plug in where, but someone spent some serious money to be able to live in any power inviornment. I wonder if your starter on both the Primary engine and the generator are not 24 volt. Low amperage use in starting if so. Nice.
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Old 10-07-2007
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It does sound like the boat was setup for cruising world-wide. Having the 12V and 24V outlets next to each other means that you don't have to worry about which equipment you buy, just which outlet you plug it into...

What question do you have specifically???
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Old 10-08-2007
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SD - no specific question - just wanted to verify that it was all there for what I thought - US and Euro.

Since the inverter is a 24volt 1kW inverter, does that mean it's the equivalent of a 12volt 2kW inverter (for capacity)?
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Old 10-08-2007
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24volt 1kW inverter, does that mean it's the equivalent of a 12volt 2kW inverter

No.. a KW is a measure of total power...you can mess with the amps and the volts but the power wont change. All it means is that your converter takes in a 24 volt dc source and converts it to AC equivilent to 1kw of power. That could be 120 volts at about 8 amps or 240V at 4 amps depending what system it is set for.
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Old 10-08-2007
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Yup!! that is why they make Volt meters for. Especially if you are not sure which voltage you are working with. Also a handy gaget to ensure that you threw the correct breaker before working on that circuit. Unless you do want to get ZAPPED!!!
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