As I already indicated earlier, ‘core’ refers to the number of conductors in a particular cable. For example, a 4 mm single core cable has only one conductor. What does this tell you about the difference between a 3 core and a 4 core cable? From a shallow perspective, the difference between a 3 core cableand a four-core electrical wire is that the former has three conductors and the latter has 4 conductors. However, do you think that is the only thing you ought to know about these two types of cables?
Three and four-core are the most commonly used cables. Consequently, any wise individual will desire to know more than just the fact that they have a varying number of conductors. What are some distinguishing features between a 3 core and a 4 core electrical cable?
A three-core cable comprises live, neutral, and earth conductors. The cable’s composition makes it suitable for wiring applications that involve connectivity to the earth. On the other hand, a 4 core power cable consists of one neutral conductor and the remaining three conductors potentially being live wires.
This type of cable comes in handy when dealing with lighting circuits. Does this mean you cannot use a 4 core cable for earthing applications? Typically, four-core wires are not ideal for earthing applications except for the unique 4 core earth cable. Commonly referred to as the four-core plus earth cable, this type of cable consists of 4 conductors plus an additional earthing wire.
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