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Unit 2- Electrical Components-continued

This comprehensive overview covers essential electrical components for house wiring, including conductors, wire sizes, lamps, and switches. It explains the differences between 120V and 240V systems, phasing, and receptacle types. Learn about the functions of hot, neutral, and grounded wires, including split and duplex outlets. Discover safety features like GFCI receptacles and weatherproof options for outdoor use. This guide is ideal for students in electronics and those looking to deepen their understanding of household electrical systems.

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Unit 2- Electrical Components-continued

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  1. Unit 2- Electrical Components-continued EET 110 Electronics Survey I

  2. Topic Covered Last Week • Conductors • Wire Sizes • Lamps • Switches

  3. Topics to cover • 120 vs. 240 Voltage systems • phasing • Recptacles

  4. 120 Volt house wiring • 2 wires • Hot-power carrying wire • Neutral-grounded wire 120 V

  5. 240 Volt House wiring • 3 wires • Two hot-power carrying • Neutral-grounded wire • Connecting 2 colored together results in 240 120 V 240V 120 V

  6. Outlet Receptacles • Duplex outlets • 220-240 volt outlets

  7. Outlets • Permanently wired in structure • Provide the Female (receiving) terminal

  8. GFCI

  9. Nongrounding Type Receptacle • Older type receptacle • Only to be used where there is no grounding system • NEC allows GFCI in place of nongrounding • 110 V current

  10. Grounded Receptacle • Provides a connection for grounding conductor (green hex screw) • Safely bleeds off current to prevent shock • 110V current

  11. Split Receptacle • Has a break-off fin to separate outlets • Can provide two separate circuits • One circuit with ½ switched • 110V current

  12. No-shock safety duplex • Self-closing outlets • Prevents children from inserting objects • Rotary cap snaps shut when plug is removed • 110 V system

  13. Weatherproof receptacles • Outdoor use • Seals moisture out • Self closing or manual close • New installation must be GFCI protected • 110 V system

  14. Tandem blades, U-shaped ground • Terminal connections • Silver- ungrounded (hot)—240 application only • Brass- ungrounded (hot) • Green- grounded • Used for • Air conditioners • 240 V system ONLY

  15. Receptacles for three wires • 2 Brass terminals • Used for • Electric dryers • Electric ranges • 240 V system

  16. Horizontal and vertical blades and U shaped ground • Used for • Large air conditioners • Heavy power tools • Garden equipment • 240 V system

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