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Wiring devices
- 1. Type of Wiring devices ElectricalTechnology series
- 2. Learning Objective: At theend of this session, you will be able to: Identify types and usage of electrical wiring devices and consumable items
- 3. Introduction According to theNational Electrical Code (NEC), a device is a unit of an electrical system that is intended to carry, not to utilize electric energy.
- 4. Types of WiringDevices This covers a wide assortment of system components that include, but not limited to the following: • Conductors • Switches • Receptacles • Contactors • Relays
- 5. Conductor A substance orbody capable of transmitting electricity. Bare conductor Covered conductor Insulated conductor
- 6. Bare Conductor A conductorhaving no covering or electrical insulation whatsoever.
- 7. Covered conductor A conductorencased within material of composition or thickness that is not recognized by this code as electrical insulation.
- 8. Insulated conductor A conductorencased within material of composition and thickness that is recognized by this code as electrical insulation.
- 9. Switch Switch is adevice for making, breaking, or rearranging the connections of an electric circuit.
- 10. Single switch Single poleswitches are most commonly used in home lighting circuits to control one or more lights or fixtures from a single location, such as the entrance to a room.
- 11. Three- way switch Anelectric switch having three terminals used to control a circuit from two different points.
- 12. Four- way switch Anelectric switch used in house wiring so that a light may be turned on or off at three or more places.
- 13. Timer switch A switchdevice that can be set to turn something on or off at a certain time
- 14. Sensor switch A switchdevice that detects or senses heat, light, sound, motion etc., and then reacts to it in a particular way.
- 15. Dimmer switch A switchdevice that allows you to control the brightness of a light
- 16. Receptacles Receptacles is acontacting device installed at an outlet for connection externally by means of a plug and flexible cord.
- 17. Duplex Receptacle TRreceptacles are receptacles that have built in shutters that need to have equal pressure from both prongs in order to fit inside. The safety shutters will only open upon insertion of a 2-prong or 3-prong plug. This prevents children from sticking objects into the receptacle.
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- 19. straight blade receptacles Cover the full range of residential, hospital, industrial, construction, and commercial grades to meet any application. Choose from decorator or traditional styles, multiple colors, tamper resistant solutions and weather resistant products for exterior installations.
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- 21. floor box receptacles An electrical outlet set flush with a floor are the ideal solution for convenience for your residential and commercial electrical needs.
- 22. Contactor Are electromagnetically operatedswitches that provide a safe and convenient means for connecting and interrupting branch circuits
- 23. Relay Are used asauxiliary devices to switch control circuits and large motor starter and contactor coils, and to control small loads such as small motors, solenoids, electric heaters, pilot lights, audible signal devices, and other relays.
- 24. How to selectwiring devices? 1. Select one recognized industry manufacturer. 2. Look for a project with a multi- year warranty. 3. Make sure that there is an easy and clear way to contact the manufacturer support. 4. Check for a connected equipment damage warranty.
- 25. How to selectwiring devices? 5. Always ask for manufacturer’s manual. 6. Select wiring devices which are well-made and durable. 7. Select materials that are easy to use and install. 8. Select wiring devices according to the job requirements.