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Knowledge Sharing


Anatomy of a Cable

Central Cables Berhad knowledge sharing initiative

An electrical cable is a lifeline to our modern lifestyle. Most often you do not see it but it’s always there working for you 24/7, all your life from the moment you are born into this world. It is used to bring electricity into your homes, powering your fans, lightings, air conditioners, and all other modern lifestyle appliances that we grow so accustomed to. Really. Almost everything runs on electricity nowadays.

Ever wondered what is an electrical cable made of? Or how many types of construction and sizes are there? There are even special cable types which are designed to still operate for a limited duration even when a building is on fire.

So, we will share with you what’s inside a electrical cable, what is the purpose of each layer and how it’s made. Our knowledge sharing series will be divided into several main parts, which is then further divided into smaller sub-sections.


Part 1 – Conductors

Part 2 – Insulation

Part 3 – Cabling / Armoring

Part 4 – Screening

Part 5 – Outersheath

Batch 1.0 bagi program “Knowledge Sharing” bersama pelajar-pelajar Fakulti Kejuruteraan Elektrik, UTeM Melaka

9 Mar 2020 | Central Cables Berhad Batch 1.0 bagi program “Knowledge Sharing” bersama pelajar-pelajar Fakulti Kejuruteraan Elektrik, UTeM Melaka. Selaras dengan slogan Central Cables “Central to Nation’s Growth”, program ini bertujuan untuk berkongsi ilmu bersama pelajar-pelajar IPTA/IPTS tentang kabel kuasa.  10,516 total views

 10,516 total views

Part 2 (a) – Insulation

There are many types of electrical insulation in use today, with each having unique physical and chemical properties. Most common insulation materials used in electrical cables are made from plastic-polymer-based compounds. Ever wondered why bare conductors used in high voltage transmission systems do not have any insulation? The answer: air is natural insulation between phase-to-phase…

 24,490 total views

Part 1 (i) – Conductor

Copper and aluminium are primary choices of material for cable conductors due to its mechanical, electrical properties and of course price of the commodity itself. The table above show the comparison between various metals according to the International Annealed Copper Standard (IACS). The diagram on the right illustrates that different material due to different conductivity…

 90,045 total views

Part 1 (h) – Conductor

The routine test shall be tested on conductor to determine the DC resistance of the conductor at 20 oC and the measured value shall not exceed the appropriate maximum specified in table of IEC 60228 and BS 6360. This type of test is done on a 1 meter sample in a laboratory using a double…

 144,134 total views