A serious electrical question

GSL

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8 Mar 2008
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Me Cheltenham, boat Sant Carles de la Rapida
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My boat is a 2002 Sea Ray 460 Sundancer, and try as hard as I might, I am totally unable to run any new cables from the engine room or helm area through to the Saloon. I know that there are very few of these craft in the UK / Europe, but I am hoping that someone may be able to give a view on this, based on similar PrinFairSeeker models.

I would like to fit an Inverter to provide AC voltage to the sockets that power my Televisions, so that when staying overnight in an anchorage and without shore power, Television or a DVD can be watched without the need to run the Generator.

My thoughts now are to put a small invertor in the Saloon connected to the 12 volt DC Cables that are run to the Distribution Board in the Saloon, my concern is, how big are those 12 volt cables at the back of the Distribution Board and would they support a 350 watt 12 / 220 volt invertor?

My boat is 1,000 miles from me at the moment, that is why I need someone to advise.

Has anybody tried something similar?

Many thanks
 
If you know the connection point of the cables
At the Battery isolate the DC load at source
And carefully unbolt bolt the cables
On the cable lug will be something
Like 70 -8

The 70 will be 70mm CSA cable size the
8 is dia of the hole in the lug Parm

expect the cables to be 95mm or 120mm
 
The cables will be sized for max load and
Volt drop over the distance between battery
To distribution panel by calculation

On the distribution panel is the main DC. Incomer
MCB this normally has a rating on it
Except something in the region
Of 50A ,63A 80A or 100A

On the distribution panel there's normally
A DC Amp meter displaying load drawn
If you turn on the normal ligths DC supplies
To fridge radios water pump etc that would be
Running at night time or when you think
You us the highest load and see the load
indicated on the Amp meter

This will give you an indication of the DC load
Drawn and then add the constant load of
The inverter which will no doubt take you close to
The incomer device rating or
over


Last thing you want is a electrical fire
Due to an over load


I have Avtex TV's run on 12v system
excellent
 
My boat is a 2002 Sea Ray 460 Sundancer, and try as hard as I might, I am totally unable to run any new cables from the engine room or helm area through to the Saloon. I know that there are very few of these craft in the UK / Europe, but I am hoping that someone may be able to give a view on this, based on similar PrinFairSeeker models.

I would like to fit an Inverter to provide AC voltage to the sockets that power my Televisions, so that when staying overnight in an anchorage and without shore power, Television or a DVD can be watched without the need to run the Generator.

My thoughts now are to put a small invertor in the Saloon connected to the 12 volt DC Cables that are run to the Distribution Board in the Saloon, my concern is, how big are those 12 volt cables at the back of the Distribution Board and would they support a 350 watt 12 / 220 volt invertor?

My boat is 1,000 miles from me at the moment, that is why I need someone to advise.

Has anybody tried something similar?

Many thanks

I'm fitting a modified sinewave inverter (24V 1000W continuous) which needs 58A!!!
That's some serious wiring hence it goes back where the batteries (and I'll be switching it on and off via a relay)

For a 350W (albeit 12V), things are slightly simpler, but really I'd like it to be in the e/r and not on the salon!
(doesn't solve your problem of finding a way to route the (much thinner) 240V cables to the el/panel though :( )

cheers

V.
 
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