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

I have a few comments regarding your suggestions. 

1. A 10kW motor will draw max 20”A at 50v. And most likely will never be run at that much load. I’d say 200A for the fuse. 

2. Wire size depends on the total run, to and from the load. 2/0 wire gives you 1% voltage drop at round trip of 30’. A round trip of 15’ is #2 wire with 1% voltage drop  I use a free app, Wire Sizer to calculate the size. Round trip means total length for the positive and the negative wires added together. 

3. If you’re using a $250A fuse, then with 2/0 wire your round trip reduces to 24’. 

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