P2 - Mains Electricity
- Created by: EllenMIW
- Created on: 16-12-15 17:42
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- Mains Electricity - P2
- 3 pin plug
- Wires
- Brown=Live
- Potential alternates +325 to -325
- Yellow/green=earth
- Blue=neutral
- Conducts electricity, 0V
- Copper
- Good conductor
- Malleable
- Brown=Live
- Brass pins
- Good conductor
- No rust
- Strong
- Rubber insulating material
- Stiff plastic casing
- Wires
- RCCB
- Residual Current Circuit Breaker
- An electromagnet that switches off the current if the live current and neutral current differ by more than 30mA
- Advantages
- Faster than fuse
- Reset after tripped
- Double Insulation
- Vacuum cleaners, electric drillls
- No earth wire
- Insulation on case and cable
- Key definitions
- Current
- A measure of the number of electrons passing through an electrical appliance in 1 second
- Potential difference
- A measure of the energy transferred by each electron
- Power
- Energy transferred every second
- Current
- Is an alternating current supply
- Changes direction
- 3 pin plug
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