How To Cut Metal Clad Cable?

Metal clad cable, often abbreviated as MC cable, is a type of electrical cable with a metallic covering that provides protection and durability. It is widely used in various construction and industrial applications due to its robustness and flexibility. Understanding how to properly cut and install metal clad cable is crucial for ensuring safety and compliance with electrical codes. This article explores the intricacies of working with metal clad cable, including the tools required, cutting techniques, and the differences between metal clad cable and other types of cables such as armored cable and conduit. For those interested in learning more about metal clad cable, this comprehensive guide will provide valuable insights.

Understanding Metal Clad Cable

Metal clad cable is designed with a metallic sheath that provides mechanical protection and electrical grounding. It is commonly used in commercial and industrial settings where durability and safety are paramount. The cable consists of insulated conductors enclosed in a metal sheath, which can be made of aluminum or steel. This construction allows the cable to withstand harsh environments and physical impacts.

One of the key advantages of metal clad cable is its flexibility compared to rigid conduit systems. It can be bent and shaped to fit various installation requirements, making it a versatile choice for complex wiring systems. Additionally, metal clad cable offers superior protection against electromagnetic interference, which is essential in environments with sensitive electronic equipment.

The choice between metal clad cable and other options like armored cable or conduit often depends on specific application needs. While armored cable also provides a protective metal layer, it is typically heavier and less flexible than metal clad cable. Conduit systems, on the other hand, offer a rigid pathway for cables but require more installation time and effort. Understanding these differences is crucial for selecting the right type of cable for your project.

Tools Required for Cutting Metal Clad Cable

Cutting metal clad cable requires specific tools to ensure a clean and precise cut. The most common tool used is a metal clad cable cutter, which is designed to cut through the metallic sheath without damaging the internal conductors. These cutters typically have a ratcheting mechanism that provides leverage and control during the cutting process.

In addition to a cable cutter, other tools such as a utility knife, wire strippers, and pliers may be needed for preparing the cable ends and making connections. A metal clad cable connector is also essential for joining sections of cable or connecting the cable to electrical devices. These connectors ensure a secure and reliable connection while maintaining the integrity of the cable's protective sheath.

Proper tool selection is critical for achieving a professional result. Using the wrong tools can lead to damaged conductors, compromised cable integrity, and potential safety hazards. Therefore, investing in high-quality tools specifically designed for metal clad cable is recommended for both professional electricians and DIY enthusiasts.

Cutting Techniques for Metal Clad Cable

The process of cutting metal clad cable involves several steps to ensure a clean and accurate cut. First, measure the length of cable needed and mark the cutting point with a marker or tape. This ensures that the cut is made at the correct location and reduces the risk of errors.

Next, use the metal clad cable cutter to make the cut. Position the cutter around the cable at the marked point and squeeze the handles to engage the cutting blades. The ratcheting mechanism will help guide the blades through the metal sheath, resulting in a clean cut without crushing the conductors inside.

After cutting the cable, inspect the ends to ensure that the conductors are not damaged. If necessary, use a utility knife to trim any excess metal or insulation from the cable ends. This step is important for preparing the cable for installation and ensuring a secure connection with connectors or terminals.

Finally, attach the appropriate metal clad cable connector to the cable ends. These connectors are designed to fit over the metal sheath and provide a secure connection point for electrical devices or other sections of cable. Properly installed connectors maintain the cable's protective properties and ensure a reliable electrical connection.

Installation and Support of Metal Clad Cable

Once the metal clad cable is cut and prepared, it is ready for installation. The cable should be routed and supported according to electrical code requirements to ensure safety and reliability. Metal clad cable shall be supported at intervals not to exceed specific distances, which vary depending on the cable size and application. Proper support prevents sagging and reduces the risk of damage to the cable over time.

Metal clad cable clamps and clips are commonly used to secure the cable to walls, ceilings, or other structures. These accessories provide stability and prevent movement that could lead to wear or damage. When installing the cable, it is important to avoid sharp bends or kinks, as these can compromise the cable's integrity and performance.

In addition to physical support, attention must be paid to the cable's electrical connections. Metal clad cable box connectors are used to join the cable to electrical boxes or panels. These connectors ensure a secure and grounded connection, which is essential for maintaining electrical safety and preventing potential hazards.

Metal Clad Cable vs. Armored Cable and Conduit

When selecting electrical wiring solutions, understanding the differences between metal clad cable, armored cable, and conduit is crucial. Metal clad cable offers flexibility and ease of installation, making it ideal for applications where space is limited or complex routing is required. Its metallic sheath provides protection against physical damage and electromagnetic interference.

Armored cable, while similar in construction, is typically heavier and less flexible than metal clad cable. It is often used in applications where additional mechanical protection is needed, such as in industrial environments with heavy machinery. However, its rigidity can make installation more challenging, especially in tight spaces.

Conduit systems, on the other hand, provide a rigid pathway for electrical cables. They offer excellent protection against environmental factors and physical impacts but require more time and effort to install. Conduit is often used in commercial and industrial settings where long-term durability and protection are priorities.Choosing between these options depends on the specific requirements of the project, including environmental conditions, installation complexity, and budget considerations. 

Conclusion

Working with metal clad cable requires a thorough understanding of its properties, cutting techniques, and installation requirements. By using the appropriate tools and following best practices, you can ensure a safe and efficient installation that meets electrical code standards. Whether you are a professional electrician or a DIY enthusiast, mastering the art of cutting and installing metal clad cable is a valuable skill that enhances your ability to tackle a wide range of electrical projects.

For those interested in further exploring the applications and benefits of metal clad cable, resources such as What is metal clad cable used for provide additional insights and guidance. By staying informed and equipped with the right tools, you can confidently work with metal clad cable and achieve professional results in your electrical installations.