Not all cables are the same
Any cable consists of a conductor or several conductors surrounded by an insulator. The conductor is usually copper or occasionally aluminum. They may have outer protective layers to prevent damage. And that’s about it. End of book!
As always, it isn’t quite that easy. Let’s have a look at a few types.
Power cables
These vary according to the amount of current that is to be carried. The more current it has to carry, the lower the resistance of the conductor needs to be. This is because a significant amount of the power being distributed can be wasted in heating the cables. Power = current2 × resistance, or as a formula P I2R watts, where P (sometimes called W) is in watts (W), I is current in amps (A) and R is ...
Get Introduction to Copper Cabling now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
