The steps for grounding wire are as follows:

Tool preparation: electric screwdriver, flat nose pliers, insulation stripping pliers, insulation tape, grounding wire.

1. Read the product manual of the electric pressure cooker carefully, which may contain specific instructions on the grounding method.

2. Check whether the electric pressure cooker has a dedicated ground wire interface. Some electric pressure cookers will provide a port marked "Ground" or "GND" on the bottom or side for connecting the ground wire.

3. Choose a ground wire that meets safety standards to ensure its quality is reliable. Generally speaking, the ground wire should be yellow-green.

4. Connect one end of the ground wire to the ground wire interface of the electric pressure cooker. Typically, the ground wire connector will have a screw or clip, and you can use a screwdriver or wrench to secure the ground wire to the connector.

5. Insert the other end of the ground wire into a properly grounded socket. Make sure the outlet is properly grounded to provide a good electrical ground.