how to reverse the direction of rotation of a 3-phase, AC motor?

1- replace the supply fuses with larger ones, 2- swap two of three leads, 3- rearrange all conections, 4- tie one lead to the case of the motor

#2 is correct.

#2 is correct

1 - motor not protected 2 - motor turns opposite direction ( the phases peak at different time 120degrees out of phase l1 then l2 then l3, l1 then etc by swapping 2 leads you reverse the rotation. 3 - motor either goes forwards or backwards depending how you connect it back up. 4 - bangggg!!!!

2- swap two of three leads,