In any building or construction project, ensuring the safety and longevity of electrical wires and cables is crucial This is where armored cable comes into play Armored cable, also known as armored wire or armored cable wiring, is a type of cable that has an extra layer of protection added to it This layer is usually made up of steel or aluminum, which protects the cable from physical damage, moisture, and corrosion In this article, we will explore the importance of armored cable in ensuring the safety of electrical systems.
The Need for Armored Cable
There are several reasons why armored cable is essential in any electrical installation First, it can withstand harsh environmental conditions such as moisture and extreme temperatures Typically, electrical cables are exposed to various external elements, which can lead to corrosion and damage over time An armored layer prevents such damage and extends the lifespan of the cable.
Armored cable is especially useful in areas where harsh chemicals and acids may be present These areas include industrial plants, chemical factories, and similar locations Here, electrical cables may be exposed to hazardous chemicals and corrosive agents, which can damage them.
Another reason for using armored cable is for mechanical protection Electrical cables are often exposed to physical damage from external factors such as animals, machinery, and even human interference The armored layer protects the cable from cuts, abrasions, and any other physical damages.
Types of Armored Cable
There are different types of armored cable available, each designed for specific applications and environments Here are some of the most commonly used armored cables.
Steel Tape Armored (STA) Cable
Steel Tape Armored (STA) cable is the most common type of armored cable It consists of a core made of solid or stranded copper wires with PVC insulation The core is then wrapped with a steel tape layer and an outer PVC sheath armerd cable. STA cable is suitable for both indoor and outdoor environments and can be used in a wide range of applications.
Steel Wire Armored (SWA) Cable
Steel Wire Armored (SWA) cable consists of a core made of solid or stranded copper wires with PVC insulation Like the STA cable, it is wrapped with a layer of steel, but this time, the cables are armored with a layer of galvanized steel wires SWA cables are used in high-stress environments, such as mines and tunnels, where high tensile strength is required.
Aluminum Wire Armored (AWA) Cable
Aluminum Wire Armored (AWA) cable is very similar to SWA cables but with an aluminum layer instead of a steel one AWA cables are suitable for use in areas where magnetic interference is a concern since aluminum is non-magnetic They are used in the transmission of power over long distances, where high voltage is required.
Armored Cable Vs Non-Armored Cable
The primary difference between armored and non-armored cable is the added layer of protection Non-armored cables, also known as bare cables, do not have any extra protection apart from their insulation As a result, they are less durable and more susceptible to damage compared to armored cables.
Non-armored cables are commonly used in areas where there is little risk of physical damage or where the cost of installation is a concern For example, they are used in residential wiring where the cables are hidden behind walls and are thus not exposed to external elements.
Armored cables, on the other hand, are more durable and offer better protection, making them a safer option for high-risk environments They are commonly used in industrial applications, mines, tunnels, and commercial buildings where they are exposed to harsh environmental conditions.
Conclusion
In conclusion, armored cable plays a vital role in ensuring the safety and longevity of electrical systems The extra layer of protection provided by armored cables protects them from physical damage, moisture, and corrosion There are different types of armored cables to choose from, each designed for specific applications and environments.
When designing electrical systems, it is essential to consider the type of cable to use and the environment in which it will be used An experienced electrical contractor can help guide you through the process and ensure that your electrical systems are safe and reliable.
Using armored cable in your electrical installation is a wise investment that will save you from future costs and risks associated with damaged cables It is a small price to pay for the peace of mind that comes with knowing that your electrical systems are safe and protected.