What Is An Underground Cable?

Have you ever come across a circumstance where it is practically impossible to use an overhead cable? An underground cable comes in handy in such cases. You have to employ this type of electrical cable in situations where it becomes impractical to install overhead wires. What are some of the circumstances that warrant underground cable installation? Power installations in congested areas or areas where local regulations prohibit overhead cables are vital examples of situations where you would have to use this incredible cable type.

That being said, you have to note that underground power cables are not one-size-fits-all. The ideal type varies depending on your voltage and service requirements. In most instances, this type of cable is suitable for long-range installations that require low voltage.

More importantly, you need to understand that underground cable types vary depending on their constitution? What exactly do I mean by cable constitution? This cable type comprises one, two, three, or four tinned-stranded copper conductors like typical PVC cables. Some manufacturers opt for aluminium conductors because they are cheaper than copper. Nonetheless, it is always advisable to go for cables made of copper conductors.

Your intended installation location also plays a critical role when selecting a suitable underground cable. It would be best if you considered various mechanical and voltage aspects depending on the installation location. As per their voltage capacities, underground-type cables are generally classified as low-voltage wires for operating voltage up to 1 kilovolt and high-voltage cablesfor operating voltage up to 11 kilovolts. Other vital factors that you ought to consider when choosing an ideal underground power cable include;

1. The over underground cable system voltage requirements
2. The cable’s current carrying capacity
3. The overall permissible voltage drop
4. Short circuit ratings.