For a 3× 10 square cable, a leakage protector of about 50 amps should be selected, and the terminal of the 50 amp leakage protector should be connected to the wire of 10 square. One is to peel off the insulation of the wire and press it directly on the terminal. In addition, you can also press the thread nose and tighten it with the missing connecting screw. Remember, never use the method of stock breaking, because stock breaking will seriously affect the current carrying capacity of the line.