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Unit 2- Electrical Components-continued

Unit 2- Electrical Components-continued. EET 110 Electronics Survey I. Topic Covered Last Week. Conductors Wire Sizes Lamps Switches. Topics to cover. 120 vs. 240 Voltage systems phasing Recptacles. 120 Volt house wiring. 2 wires Hot-power carrying wire Neutral-grounded wire. 120 V.

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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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