You will want to use something with at least 10 AWG wire, and 8 AWG would be better. My suggestion would be to use something like this: https://www.amazon.com/gp/product/B0080IGPFI/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

Yes, some splicing may be involved. If you have multiple splices to make in the same wire, soldered connections will typically perform better than crimped.