Re: [electricboats] Fuse Setup for 10KW Thunderstruck motor on 28FT Herreshoff

If you have not installed your system yet, I strongly encourage to consider going with a larger battery bank if you can. 100ah will not last very long with the 10kw motor. 

On Jan 17, 2021, at 17:33, Carsten via groups.io <Carstensemail=yahoo.com@groups.io> wrote:



The correct formula is W / V.

Many electric boaters refer to Amp use, but it is best to provide the Watt use, as the voltage of a system may not always be 48V.

Carsten

On Monday, 18 January 2021, 07:56:35 GMT+8, rholden@orcon.net.nz <rholden@orcon.net.nz> wrote:

I have a Thunderstuck that I intend to install on my 28ft yacht. New to all this and trying to get this done and installed safely.

Basic question but on this setup with the 48Volt 10KW - I assume I have to install some fuses between the battery pack ( 4 X 12VOLT 100AMP Deep Cycle) and motor and possibly other places in the system to protect equipment and humans.
What is the Amperage of the fuses needed?? Is the calc V / W = AMP??
Where would you install any fuses in this kind of system?
Thanks all.