OP
SLSpark
the main fuse may be 80-100amp i would upgrade the tails to 25mm the fuse is nothing to do with you but as you are upgrading the system why not upgrade the main tails as its fairly cheap to do so £10 max material , disconnecting them from old board anyway .
i always upgrade to 25mm tails and 16mm earth incoming
i always upgrade to 25mm tails and 16mm earth incoming