Precautions for Using Electric Wrenches

Nowadays popular electric wrenches are used in many fields, our daily life is also needed to use fasteners everywhere, and professional electric wrench need to use its advantages to reinforce our parts. What should we pay attention to when using an electric wrench?
The electric shock problem is the most important thing to note when using an electric wrench.
1.Before use should check the internal and external parts of the electric wrench is intact, shell and wire insulation effect is not allowed to leak phenomenon;
2.The voltage specified by the electric wrench should be in accordance with the applied voltage, the grounding device must be correct, the plug can not be inserted in the wrong direction;
3.If the operation site without power, need to extend the cable, then you should use enough capacity cable, and installed on the elevated, to prevent the cable was crushed damage.