battery cable

[anderson]

we are going to install a new 1000 watt electric windlass on the boat,what size cable do we need on a 30ft run.

 

[byron]

<font color=blue> Thirty feet?

Sorry... couldn't resist it

</font color=blue>

http://www.alexander-advertising.co.uk

 

[Guest]

Off hand I'm going to guess that you will probably need 2/0 or 4/0. Your run isn't 30'.....its 60', unless your batteries are located 15' from your windlass. You have to consider the run out and back to the batteries in your computation for your wiring. Length vs amps. Since I don't know if your boat is 12, 24, or 36 VDC I can't really tell you what size cable you need. And if you're on the other side of the pond, I'm not sure that 2/0 or 4/0 means a whole lot.

Reality is the cause of all stress!!

 

[charles_reed]

Assuming your voltage supply is 12v

Assuming your windlass is 9m from your batteries.

You'll need about 28mm2 - ie what is used on cars for battery to starter motor.

Siemens do a table showing the various sizes of cables needed for differents dc voltages over various distances.

You'll find you're pretty close to the maximum run for that amount of 12v current - I'd suggest fitting a thermal interrupt in the run.

 

[LadyInBed]

<pre>Have a look at <A target="_blank" HREF=http://www.outbackmarine.com.au> Outback Marine </A> site</pre>


they have a difficult to find table at
<pre>http://www.outbackmarine.com.au/products/Ample Technology/primer/gauge.html</pre>


Note: the <font color=red>Ample</font color=red> <font color=red>Technology</font color=red> is all one word with
a <font color=red>%</font color=red> and a <font color=red>20</font color=red> with no gaps between the two words.

I cant edit the % 20 into the url

 

[BrendanS]

http://www.outbackmarine.com.au/products/Ample Technology/primer/gauge.html

 

[seaesta]

Very useful - many thanks for the link

Martin