Help with Battery Cable

[Scott]

What gauge battery cable did you use ( for a 200-250 hp motor).
I’m relocating the batteries to the console. However, and much to my dismay, they will terminate at a pair of battery posts in junction boxes in the transom. That so I can step down to a cable that will fit through my engine cowling.

Total loop about 26’ ….I was thinking # 1 gauge

Thoughts ??? Suggestions??? What did you do ??

Thanks in advance