(1) Power tools should be properly insulated. The source calls for protection such as leakage protection and safety isolation transformers on construction sites.
(2) The source says to wear eye protection when using an angle grinder and direct sparks toward an unoccupied area.
(3) For handheld drilling, the source says to start after contacting the workpiece, avoid slipping when drilling at an angle and never remove metal chips by hand during operation.
(4) The source describes starting a grinder, reaching normal speed before contacting the workpiece and correctly installing the wheel guard.
(5) The original wording about sawing and positioning a grinding wheel is unclear and is retained in the Chinese source text.
(6) For an "electric blowing nozzle" [source wording], the article specifies a hard hat, insulating footwear, a mask and eye protection.
