MC Cable Explained: Benefits, Applications, and Buying Tips

March 31 2025
7 min reading time

In modern electrical installations, safety, efficiency, and reliability are top priorities. Choosing the right type of wiring can make all the difference in ensuring a successful project that meets regulatory standards while optimizing performance. Metal-clad (MC) cable has become a preferred solution in many commercial, industrial, and residential applications due to its durability, flexibility, and ease of installation. Whether you are an electrician, contractor, or facility manager, understanding the benefits, applications, and buying considerations of MC cable will help you make informed purchasing decisions.

This guide explores everything you need to know about MC cable, including why it is widely used, where it is most beneficial, and what to consider when selecting the right type for your needs.

What is MC Cable?

MC cable is a type of armored electrical cable designed for use in various applications, from commercial buildings to industrial facilities. It consists of insulated conductors enclosed in an interlocked aluminum or steel armor, which provides mechanical protection and eliminates the need for conduit in many installations. This robust design makes MC cable a convenient and cost-effective alternative to traditional wiring methods, allowing for faster and more flexible installations.

One of the primary advantages of MC cable is its ability to be installed in exposed or concealed locations without requiring additional conduit. The interlocking metal armor serves as both protection and a grounding path, making it a reliable and efficient wiring solution. MC cable is manufactured in various configurations, including versions with different conductor sizes, insulation types, and grounding options to meet specific project requirements.

Key Benefits of MC Cable

MC cable has gained popularity in the electrical industry due to its numerous advantages over traditional wiring methods. One of its key benefits is durability and protection. The interlocking metal armor provides superior defense against physical damage, making it an excellent choice for high-traffic or high-risk environments. Additionally, MC cable offers ease of installation compared to conduit and traditional wiring, as it is more manageable and requires less labor, ultimately reducing installation time and costs.

Another significant advantage of MC cable is its compliance with the National Electrical Code (NEC), making it a safe and approved option for commercial, industrial, and even residential applications. Its versatility further adds to its appeal, as it can be used in various environments, including indoor, outdoor, concealed, and exposed locations, providing flexibility for different installation needs. Moreover, MC cable presents notable cost savings by eliminating the need for conduit and minimizing labor expenses, making it a cost-effective solution for many electrical projects.

Common Applications of MC Cable

MC cable is widely used across various applications due to its durability, flexibility, and compliance with safety standards. In commercial buildings, it is commonly installed in office spaces, retail establishments, and hotels to provide power to lighting systems, electrical outlets, HVAC units, and emergency systems. Its ease of installation makes it a preferred choice for contractors managing large-scale projects with complex wiring needs. Industrial facilities, such as manufacturing plants, warehouses, and processing centers, benefit from MC cable’s robust construction, as its metal armor offers protection against mechanical damage, making it ideal for environments where wiring is exposed to heavy machinery, vibrations, and other potential hazards.

In healthcare settings, hospitals and medical centers rely on MC cable for critical systems, including emergency power, lighting, and life-support equipment. Specialized hospital-grade MC cables are designed to meet the stringent safety and reliability standards required in medical environments. Although less common in residential construction, MC cable is sometimes used in applications such as home theaters, smart home systems, and security wiring, where its built-in protection and flexibility make it a practical solution for complex residential wiring needs. Additionally, certain types of MC cable are rated for outdoor and wet locations, making them suitable for wiring parking lot lighting, landscape lighting, and other exterior electrical installations. These cables feature extra protective coatings to prevent moisture penetration and corrosion, ensuring long-term performance in challenging environments.

Buying Tips for MC Cable

When purchasing MC cable, it’s important to consider several factors to ensure that you select the right type for your project. Here are some key aspects to keep in mind:

1. Determine the Right Type of MC Cable

MC cable comes in different configurations depending on the application. Some common variations include:

Standard MC Cable – Used in general commercial and industrial wiring applications.
MC-All Purpose– This cable is designed to eliminate the need for a separate copper ground wire, which simplifies installation and reduces costs.
MC-AL (Aluminum) – This cable uses aluminum conductors instead of copper and is designed for high-power applications where weight and cost savings are a priority.
Hospital-Grade MC Cable – This cable is designed to meet specific safety and regulatory standards for use in healthcare settings.

ULE Group proudly stocks many popular MC Cable Brands, including Atkore Brands (AFC & Kaf-Tech), Cerro, Encore, Northern Cables, and Southwire. Choosing the correct type of MC Cable ensures compliance with NEC regulations and optimal performance in the intended environment. Our cable experts can help you choose the right cable for your next project. Contact us today.

2. Consider Conductor Size and Number

MC cable is available in various conductor sizes and configurations. Selecting the right conductor size is critical for carrying the appropriate electrical load without excessive voltage drop or overheating. For higher power applications, larger conductors are necessary to handle increased current levels.

3. Evaluate Grounding Requirements

Some MC cables come with a dedicated ground conductor, while others rely on the metal armor as an equipment grounding path. Understanding your project’s grounding requirements will help you choose the correct cable to ensure electrical safety and compliance.

4. Check NEC and Local Building Codes

While MC cable is approved for use in many applications, specific local codes may have additional requirements or restrictions. Always check with your local authorities or an experienced electrician to confirm that your selected cable type meets all necessary regulations.

5. Purchase from a Trusted Supplier

Partnering with a reliable electrical supply distributor is essential to ensuring the quality and compliance of your MC cable. A trusted supplier like ULE Group offers a wide range of MC cable options, expert advice, and competitive pricing, making it easier for businesses and contractors to find the right products for their needs.

Installation Considerations for MC Cable

Installing MC cable is relatively straightforward compared to traditional conduit wiring, but following best practices ensures a safe and efficient installation:

Secure the Cable Properly – Use the correct fittings and fasteners to keep the cable firmly in place and prevent movement over time.
Avoid Sharp Bends – Bending the cable too sharply can damage the internal conductors and compromise performance. Follow manufacturer guidelines for minimum bend radius.
Use Proper Cutting Tools – When cutting MC cable, use the appropriate tools to avoid damaging the conductors inside the metal armor.
Follow NEC Requirements – Ensure that MC cable is installed according to NEC guidelines, particularly regarding support intervals, grounding, and permissible locations.

Choosing the Right MC Cable for Safety, Efficiency, and Compliance

MC cable is a highly versatile and reliable wiring solution for commercial, industrial, and residential applications. Its durability, ease of installation, and cost-effectiveness make it a preferred choice for many electrical projects. Understanding its benefits, applications, and key buying considerations helps ensure that you select the right type for your needs while remaining compliant with industry standards.

For businesses and contractors looking for high-quality MC cable and electrical supplies, ULE Group provides expert guidance and a wide range of products to support successful installations. Investing in the right wiring solutions today ensures long-term safety, efficiency, and reliability for your electrical systems.