Goodwe ET Series User Manual page 13

Step 3
Firmly crimp the 10 pin terminals on the ends of the cables
Note: Make sure there is no crimped insulation in the pin terminals
Step 4
Tightening torque 2.0-2.5N .m
Connecting the AC cable to the terminal block with a tightening torque of 2.0-2.5N.m
Note: Connect the Backup terminal block first
Make sure you have everything wired up correctly
Screw the cover (see the picture above)