Basic Electrical Installation Work

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With wood cut- ting blade fitted they are useful for cutting across floorboards and skirting boards any other application where padsaw would used. Silicon carbide discs are suitable for cutting slate, marble, tiles, brick and concrete, and aluminium oxide discs for cutting iron and steel such conduit and trucking. Jigsaws can fitted with wood metal cutting blades. Cordless electric drills are also available which incorporate rechargeable battery, usually the handle. Hammer drills give between two and three thousand impacts per minute and are used for drilling concrete walls and floors.5. Many construction sites now insist low voltage battery tools being used which can further increase safety without any loss produc- tivity. FIGURE 7.. With a metal cutting blade fitted, they may used cut trunking. When lot trunking work undertaken, electric nibbler a worthwhile investment. Wire brushes are made which into the drill chuck for cleaning the metal. They offer the convenience electric drill- ing when electrical supply not available extension cable is impractical. Some useful electrical tools are shown Fig. 7. Angle grinders are useful for cutting chases brick concrete. . Variable-speed electric drills, which incorporate vibrator, will also drill brick and concrete easily wood when fitted with masonry drill bit.Tools and equipment used for electrotechnical applications 143 in good condition and appropriate for the purpose for which they are used. Safety First Power Tools Many construction sites now only allow ● Low voltage tools ● PAT tested tools ● battery powered tools.5 Electrical hand tools. Electric drills are probably used most frequently all electrical tools. This nibbles out the sheet metal, easily control- lable and one alternative the jigsaw. They may used drill metal wood. The discs are interchangeable