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Application :

These types of cables are suitable for use in control panels. It is not recommended to use these types of cables in open space, conveyor systems and places where there is a magnetic field.

Structure: 

  With/PVC

Conductor material and class: Class 5 annealed copper (Afshan)
Insulation material: PVC type D mixture
Insulation coloring: up to 5 strands of wire will be colored strands, more than 5 strands will be numbered.
Coating material: ST5 type PVC mixture

 

Wire Colors
White insulation: Typically considered neutral but can sometimes be used as a hot lead in certain situations, such as switch loops. ...
Green insulation and bare copper: Ground wire.
Black insulation: Hot wire for switches and outlets.
Red insulation: Hot wire for switch legs and hardwired smoke detectors.

Power cables are categorised into low voltage, medium voltage, and high voltage cables. Specialised types include armoured cables, flexible cables, and submersible cables, each designed for specific applications and environments.
Electrical cables can be categorised in several different ways including by voltage rating, application, environment, industry, and material type, and determining any of these will help narrow down the search for the correct cable for any given purpose.

You will find twin core and earth cabling used all over your home in a variety of sizes. 2.5mm is commonly used for behind sockets, while 1-1.5mm is most often used for lights (depending on how many lights you have in a circuit).
2.5mm Twin and Earth is commonly used as indoor domestic cable. The most common use for this type of cable is for circuits that provide power to sockets. It is made up of two cores and an earth core which must be covered with the identifying green and yellow sleeve when installed.

To calculate the Cable Sizing one needs to divide the voltage running through the cable by the target current. For instance, If your wire has a voltage current of 150 Volts and your target is 30 then you divide 150/30. This gives you your target resistance of 5 which is required.
Which type of wire is best for electricity? Copper wire is generally considered the best choice for electrical wiring due to its excellent electrical conductivity, durability, and resistance to corrosion. Copper has a high conductivity rating, meaning it allows electricity to flow efficiently with minimal resistance.