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Mains electricity in the home
Description
Mind Map on Mains electricity in the home, created by ryansimon on 22/04/2013.
Mind Map by
ryansimon
, updated more than 1 year ago
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Created by
ryansimon
about 11 years ago
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Resource summary
Mains electricity in the home
3 wires, earth wire, neutral wire and live wire
Earth wire (green and yellow) if there is a fault and the case becomes live, current passes along this wire, making the device safe
Live wire (brown) provides energy to the device. Has a potential difference of 230v
Neutral wire (blue) completes the circuit. Has a potential difference of 0v
It is safe to use two core cables when the case itself is an insulator. It could be used safely in plastic kettes, hair dryer and a t.v.
If the diameter of a cable is smaller then the current cant flow as much and it will also heat up quicker which could cause a fire
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