How to wire a high-current relay?
Since motors have a surge current starting up that is up to 5x the max load rated crrent, if you say the hoist motor is rated for 15A then expect up 75A starting surge which reduces while increasing in speed to match the load torque=current demand.
In this hoist motor case, I would be looking towards OMRON or PANASONIC Relays rated for 75 to 90A if you want to do more than 1k cycles, which I estimate from TE's datasheet.
https://www3.panasonic.biz/ac/e_download/control/relay/power/catalog/mech_eng_hepv.pdf?via=ok
read all the fine print.
The thermal terminals imply heavy wire needed to remove heat from relay contacts and extend life.  AWG 10 will give you more torque and than 16 AWG but it depends on length and voltage drop for surge currents. So you must look up this value for Ohms/m * 75A. A  10% drop may be acceptible for you, 5% or 20% drop for others, but the lower the torque and start voltage, the longer it takes to reduce the current.