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What should be checked before operating air or power tools?

  1. Power connection safety

  2. Size of the tool

  3. Type of lubricant used

  4. The length of the cord

The correct answer is: Power connection safety

Before operating air or power tools, checking the power connection safety is crucial. This involves ensuring that the tools are properly connected to their power source and that there are no frayed cords, damaged plugs, or improper voltage supply. Safety checks help prevent electrical hazards such as shocks or short circuits, which can lead to serious injuries. In addition to ensuring the power connection is secure and safe, other elements like the size of the tool, the type of lubricant used, and the length of the cord, while important for different aspects of tool operation and maintenance, are not as critical as confirming that the power source is safe before using the tool. Proper power connection ensures that the operator can work effectively without the risk of electrical failure or accidents.