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How to use electric tools
2. Hand-held power tools with metal casings should protect the grounding wire as reliably as possible. The power lead is a multi-core soft rubber sheathed cable, and both ends of the grounding protection wire should be firmly connected.
3. Hand-held power tools should be used by full-time personnel with certain professional knowledge. Strictly abide by the relevant safety operating procedures during use.
4. Before use, be sure to check whether the relevant electrical protection devices and mechanical protection devices are intact. Its use should be normal. Also pay attention to whether its rotating part is flexible and not jammed.
5. When using Class I hand-held power tools, the user must wear protective equipment that meets the regulations and set qualified protective equipment. And take corresponding safety protection measures against electric shock according to regulations, such as installing a leakage protector in the power circuit, or wearing insulating gloves, wearing insulating shoes or standing on an insulating mat. When using Class II hand-held electric tools in a humid and narrow place, a leakage switch should be installed. The working current of the electric switch is less than 1.5mA, and the action time is less than or equal to 0.1 second. And the leakage switch should be placed in the container and supervised by a dedicated person.
6. Occupational hazards of using hand-held power tools. Arm vibration disease caused by long-term hand-transmitted vibration operations was listed as one of the statutory occupational diseases in my country as early as 1957, also known as local vibration disease, and typically manifested as episodic white fingers. Hand-held electric tools, especially those with unbalanced mass rotating parts, such as tools with crank connecting rod piston impact devices and tools with eccentric devices (such as electric hammers, electric picks, etc.), will produce Larger vibrations. When operating these tools, vibrations are transmitted to the hands, wrists and shoulders of the operator. With the widespread use of electric tools, the vibration hazards generated by them have attracted more and more attention.