Presentation1.pptx
- 2. a hand tool is any tools that is powered by hand with out motor. 1. VOLTAGE TESTER: voltage tester is used for a quick safety check to make shure there’s no voltage in an electrical wire or device before you start working on it.
- 3. Non-contact voltage Testers: Non-contact voltage testers are the simplest and safety types of because they can detect electricity just by being near an outlet slot or wire.
- 5. As with Phillips screwdrivers, you will likely need more than one size of straight-blade screwdrivers.
- 7. Tongue-and-groove pliers are used to remove knockouts from metal electrical boxes, tighten cable clamps, and adjust expansion- type ceiling fan boxes.
- 8. Wire strippers are used to cut and strip insulation from electrical wire. They have a variety of holes for stripping different standard sizes of wire and include cutting teeth for trimming wire ends. are used to cut wire. They are specially designed with a cutting edge that goes down to the tip of the pliers, allowing you to get into tight areas to trim wires.
- 9. Linesman pliers are electrician do-it-all pliers. They cut, twist wires together, and grip wires for pulling. They have a squared-off end that is great for twisting wires together, a center cutting blade for cutting wire, and a grip area between the handles for pulling wire.
- 10. A utility knife, are used to remove insulator from cable. Or box cutter, is handy for cutting sheathing from non-metallic cable and to open boxes.
- 11. A voltmeter is used to read voltage levels and verify that circuits are indeed “live.” or off. Multimeters can read voltage levels as well as amperage (current), resistance, and DC voltage and amperage. Wire crimpers are used to crimp lugs or terminals onto wires. May can also be used to strip wire insulation.
- 50. 3-way switches symbol 4-way switches symbol