Choosing the correct wire size for your project


Hi Jeff,

I'm about to rewire my boat. The question is: Is it possible to use 70m2 for all my bigger wiring jobs. Battery to motor, battery to busbars, busbars to switch panels. Insted of having to buy a little bit 50m2 and so on. it´s cheaper to buy at bigger roll of 70m2 wire than several small different ones, and then having the risk of ending up with useless leftovers. Thanks a bunch for realy inspiring videos and the hopfully, nowlegde to do things right.
All the best, Kristian


Hi Kristian,

Other than space and weight considerations, no harm in going bigger then minimum cable sizes.
Make sure you calculate the appropriate minimum wire size and go from there.


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