794218
Description
Flashcards by Adam Collinge, updated more than 1 year ago
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Created by Adam Collinge
almost 10 years ago
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| Question | Answer |
| Give 9 examples of hazards in the home | 1) Long cables 2) Frayed cables 3) Cables in contact with something hot or wet 4) Water near sockets 5) Shoving objects into sockets 6) Damaged plugs 7) Too many plugs in one socket 8) Lighting sockets without bulbs in 9) Appliances without their cover on |
| Name the three wires in a plug | 1) Earth wire 2) Neutral wire 3) Live wire |
| What colour is the Live wire? | Brown |
| What does a live wire do in a mains supply? | Alternate between a high +ve and -ve voltage |
| What colour is the neutral wire? | Blue |
| Which two wires does electricity normally flow thru? | Neutral and live wires |
| What colour is the earth wire? | Green and yellow |
| How do earth wires make people safer? | It works together with the fuse to prevent fire and shock. It is attached to the metal casing of the plug and carries the electricity to the earth should the live and neutral wire tough the metal case |
| Which direction does the brown wire go to? | The right |
| Which direction does the blue wire go to? | The left |
| Which direction does the green and yellow wire go to? | The top |
| List four common problems about plugs? | 1) Wires are too short or long 2) Wires routed incorrectly 3) Cable grip not fastened 4) Insulation stripped back too far |
| Give two features of the plug | 1) The metal parts are made from copper and brass because they conduct well 2) The case, gable grip and insulation are made out of rubber or plastic as they're good, flexible insulators |
| Give three safety precautions to do whilst wiring a plug | 1) Right colored wire to right area 2) No bare wires showing 3) Cable grip tightly fastened over the cable outer layer |
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