[Public-List] Yanmar 2GM Starting Current

[Robert Alley]

Your cable size(s) will be determined mostly by the length of your runs 
from the starter to the battery(s) and back. The batteries are often put 
in the compartments under the sole adjacent the engine, or occasionally 
in the cockpit compartments under the seats--the "sail lockers."The 
various cable manufacturers have easily read tables online that you can 
use to determine the minimum sizes required.  Many years ago, I re-wired 
all of A30 219 & stepped up the starting and other battery cables one 
size; I consider the fact that I have had no electrical problems since a 
vindication of that decision and the modest additional expense.  It was 
helpful to lay out all the cable runs with old stiff discarded romex 
house wiring to determine exact requirements before buying and cutting 
cable. It is worthwhile to provide chafe protection (rubber grommets, 
etc) where ever you think it might be necessary, as it avoids problems 
in the future and helps make your work look more professional--and you 
will sleep better.
Good Luck!
Rob Alley
A30 219

gregr at nethere.com wrote:
> I'm in the middle of the joyous job of rewiring and need to size my battery
> cables and battery fuses.(I'm a bit sick in the head as I actually do like
> doing the electrical) The Yanmar starter is rated at 1kW so at 12V that's
> about 85 Amps. The guy at West suggested 150A for the fuses which seems
> reasonable.
>
> What currents have people been designing for?
> Where are batteries being stowed?
>
> As always, Thanks for all the help with my continuing refit!
>
> Greg
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