Step 3: screwdriver<br>It is an indispensable tool for small electrical work at home, such as connecting fuses, inserting switches, inserting light bulbs and tightening screws or screws. Remove the screw from the screw bracket. There are several types of screws, depending on how they are used.<br><br><br>Screw of upper lip<br><br><br><br>Four-prong screwdriver<br><br><br><br>hairclip<br><br><br><br>Usage and maintenance<br>1) screwdriver should not be used instead of extract or hammer.<br>2) Don't use an oil-soaked screwdriver, because you may miss the hand collision.<br>3) The screwdriver should use the same screwdriver mouth as the screw head.<br>4) When using a screwdriver, hold the handle of the screwdriver tightly, and tighten the screwdriver instead of using the handle.<br>5) Use a screwdriver with insulated side in electrician work.<br>6) If the screwdriver is damaged, it must be repaired immediately.<br>7) Avoid using a screwdriver, and remove or loosen defective old screws.<br>8) After stopping using it, clean it and store it properly.
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