Mada za sehemu hiiThermal Current ElectricityMada 5
Domestic electricity refers to the system of wiring and supplying electrical power in homes for lighting, heating, cooking, and running appliances.
In household wiring, three main wires are used, each with a specific function and color code. These wires are:
Live wire (L)
This wire carries current from the power supply to the appliances.
It is connected to one of the lower holes of a socket.
Color: Brown or Red
Caution: This wire is dangerous to touch because it is always at a high voltage.
Neutral wire (N)
This wire completes the circuit by carrying current back to the power source.
It is connected to the other lower hole of a socket.
Color: Blue
Earth wire (E)
This is a safety wire that prevents electric shocks.
It directs any leaked current safely into the ground.
It is connected to the upper hole of a socket.
Color: Green or Green with Yellow stripes
Fuse is an electrical instrument, which is composed of the thin wire of aluminum or copper insulated with rubber, or plastic, which melts when current, exceeds its normal value. Fuse can also be described as a short piece of special wire, which melts when more than a rated amount of current passes thought it.
Circuit Breakers: These sensitive switches turn off the current when there is a surge of current following a fault they can be reset simply by flicking the switch to the „on‟ position.
The plug; Is the device that is connected to the cable that supplies electricity to the appliance on one side and is pushed into a socket connected to the source of the mains electricity supply on the other.
Most faults you will encounter are from a simple cause. Sometimes these are easy to track down sometimes not. The key to success is to use a logical and systematic approach when trying to pinpoint the cause.
A good starting point is to get familiar with your consumer unit whether it is a fuse type or a circuit breaker type.
Identify what circuits you have and what they do: You will probably have several lighting circuits, probably one on each floor and several socket circuits (ring circuits) one on each floor. Additionally you may have several circuits for individual appliances like cookers, electric showers, alarms, out-door power, etc.
Appliances not working?
- Try them in another socket.
- Check the fuse in the plug (see using a continuity checker).
- If other appliances works on the socket and you've checked the fuse then the appliance is broken! Replace it or try and get it repaired by a specialist.
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