They make jumpers for the barrier terminals - in lieu of those just jumper a group - say 5 and tap with TXFMR leads on one side and tracks feeds out the other.
You can use a piece 16 awg or 18 awg to loop from screw to screw.
It appears that you have a 10 position terminal from the photo
The hot TXFMR feed should have been red for illustrative purposes and been labeled TIU OUT