Everything You Need to Know About Flexible Metal Conduit

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Flexible metal conduit is a versatile solution commonly used in various electrical and industrial applications. It offers flexibility, durability, and protection for electrical wiring. In this article, we will address 10 frequently asked questions about flexible metal conduit, providing valuable insights into its use, installation, and benefits.

What is Flexible Metal Conduit Used For?

Flexible metal conduit, also known as FMC, serves as a protective enclosure for electrical wires and cables. It is widely utilized in various settings, including commercial, industrial, and residential, to safeguard wiring in areas where flexibility is crucial. FMC is commonly employed in applications such as machinery, HVAC systems, and outdoor installations.

Flexible metal conduit can be used for a wide range of applications, including protecting electrical wiring in areas where flexibility is essential. It is widely used in commercial and industrial settings to safeguard wiring and cables from physical damage and environmental factors.

How to Install Flexible Metal Conduit?

Installing flexible metal conduit requires careful planning and proper techniques to ensure safety and functionality. The process involves measuring and cutting the conduit to the desired length, securing it with appropriate fittings and connectors, and ensuring proper grounding to prevent electrical hazards. Local electrical codes and regulations should be consulted for guidance on installation procedures.

Is Flexible Metal Conduit Waterproof?

Flexible metal conduit itself is not inherently waterproof. However, it can be used in conjunction with liquidtight fittings and seals to create a watertight enclosure for electrical wiring. This is particularly important when using FMC in outdoor or damp environments to prevent moisture ingress and protect the integrity of the wiring.

Flexible Metal Conduit vs. Rigid Conduit

Flexible metal conduit differs from rigid conduit primarily in terms of flexibility. While rigid conduit is inflexible and suitable for straight runs, FMC can bend and adapt to various shapes and angles. This flexibility makes Flex conduit an ideal choice for installations where conduit must navigate corners, obstacles, or complex routes.

Benefits of Using Flexible Metal Conduit

The use of flexible metal conduit offers several advantages in electrical installations. It provides mechanical protection to wiring, shielding it from physical damage and wear. Additionally, FMC is resistant to corrosion, making it suitable for both indoor and outdoor use. Its flexibility simplifies installation, reducing the need for additional elbows and couplings.

Can Flexible Metal Conduit Be Bent Easily?

Yes, flexible metal conduit can be bent with relative ease, allowing it to conform to the layout of the installation. Special tools, such as conduit benders, are available for bending FMC to the desired angle without damaging the wiring inside. Proper bending techniques are essential to maintain the conduit’s structural integrity.

Flexible Metal Conduit vs. Liquidtight Conduit

Flexible metal conduit and liquidtight conduit are both flexible options for protecting electrical wiring. However, liquidtight conduit is designed with a liquid-resistant jacket, making it suitable for wet and outdoor applications. FMC, on the other hand, is a more versatile choice but may require additional sealing when used in wet conditions.

How to Choose the Right Flexible Metal Conduit?

Selecting the appropriate flexible metal conduit depends on the specific requirements of your project. Consider factors such as the type of environment, the size of the wiring, and any regulatory requirements. Consulting with a qualified electrician or engineer is advisable to determine the best FMC option for your needs.

Flexible Metal Conduit for Outdoor Wiring

Flexible metal conduit is commonly used for outdoor wiring projects. When used outdoors, it should be accompanied by weatherproof fittings and sealing to protect against moisture and environmental elements. Proper installation and grounding are essential to ensure the safety and reliability of outdoor wiring.

Flexible Metal Conduit Wiring Tips and Tricks

To ensure a successful wiring project with flexible metal conduit, follow these valuable tips and tricks. Plan the conduit route carefully to avoid excessive bending and stretching. Use appropriate connectors and fittings for a secure installation. Regularly inspect and maintain the conduit to address any wear or damage, ensuring the longevity of your electrical system.

Conclusion

Flexible metal conduit is an indispensable component in electrical installations, offering flexibility, protection, and durability. Whether you are working on an indoor or outdoor project, understanding its uses, installation techniques, and advantages is crucial. By following proper procedures and guidelines, you can ensure the safe and effective use of flexible metal conduit in your electrical applications.

At ANAMET Electrical, Inc., we supply flexible electrical conduit to customers in various markets. As these components are designed to connect and protect electrical wiring, cables and other equipment, they play a critical role in many electrical and electronic applications. That’s why it is important to choose carefully when you need electrical conduit for your project. 

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This guide will explain what you need to know before buying conduit for your application. It provides an overview of what electrical conduit is, what types are available and what to consider before installing conduit.  

What is Electrical Conduit?

When electric lights were new to the world, existing pipes for gas light were used to route wiring to new electric light bulbs on existing light fixtures. The beginning National Fire Protection Association (1896) and  National Electrical Code (1897) preserved the idea of using pipe or tubing to protect electrified wiring. Electrical conduit is now tubing that electricians install to protect and route electrical wiring. It can be made from a variety of rigid or flexible materials, such as metal, PVC or thermosetting resin, depending on its intended use. Electrical conduit can be found in attics, basements, crawl spaces and on various interior and exterior spaces and surfaces. 

What Types of Electrical Conduit Are Available?

The National Electrical Code (NEC) defines the types of approved electrical conduit. This publication is frequently revised to keep up with innovative technology. States and municipalities decide how this Safety Code is applied or enforced. The requirements for electrical conduit are finely detailed. Electrical conduit can be rigid (metal, PVC or thermosetting resin) or flexible (metal (FMC), liquid tight metal (LFMC) and liquid tight non-metallic (LFNC). All conduit comes in a variety of sizes and there are limitations on how each type may be used.  

• Rigid metal conduit

  is the heaviest and thickest conduit material option. It offers protection against mice and rats in basements, garages and similar environments. Due to its durability, it is commonly used in areas with extreme or harsh conditions. It is typically made from steel or aluminum, the latter of which is recommended for high-moisture environments since it resists corrosion. If the conduit must be installed around a corner, you may need a conduit bender, conduit couplings, offset fittings, and/or elbows.

• Rigid PVC and thermosetting resin conduit

  are the lightest conduit material and the least expensive conduit option. It is used to protect electrical wiring from moisture and dirt. It is corrosion resistant, moisture resistant and non-conductive. It is used outdoors and below ground. It is commonly used for lawn irrigation controls and swimming pools. 

• Flexible metal conduit (FMC)

  is called Greenfield or Flex in the building trades. It is recommended for dry locations indoors because it is not liquid tight. Its flexibility and lighter weight make it easier to install than rigid conduit. It is frequently used in the interior walls of houses and office buildings, cubicles and office ceilings (for connecting power to light fixtures). 

• Liquid tight, flexible, metallic conduit (LFMC)

  is typically covered with a waterproof plastic coating to keep out moisture. Its flexibility enables it to be used in places with tight bends where rigid conduit would be hard to install. Typical uses include bridges, ground burial, paper mills, petrochemical facilities and water treatment plants.

• Liquid tight, flexible, non-metallic conduit (LFNC)

  is suitable for use in dry, wet, or oily locations. It can be used in indoor or outdoor environments for industrial and commercial applications. Typical uses include ground burial, HVAC units, pools and spas. 

What Should I Consider Before Installing Electrical Conduits?

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You will need to purchase conduit connectors (fittings) to install a conduit system. Fittings allow conduit to be connected to an electrical junction box.

If you are buying conduit fittings from a supplier for the first time, you should keep in mind the following considerations to make sure you are getting the best solution for your needs: 

• What are your local Safety Code requirements?

  Although the National Electrical Code describes conduit installation for operating conditions, local inspectors may provide guidance that can save money and time on installation, inspection and approval for wiring and conduit installation.

• Are the fittings the right size?

  The diameter of the fitting must match the diameter of the selected conduit to provide a secure and liquid tight connection.

• How long does the conduit and fittings need to last?

  If the conduit only needs to be used until the next remodeling project, you may shop for less durable, lower cost conduit and fitting options.

• Are the conduit and fittings made of material appropriate for the installation conditions?

  Conduit is made of a variety of materials, both metal and non-metal, for resistance to intrusion, corrosion and liquids. Fittings should be equally durable. For liquid tight conduit, choose liquid tight fittings with seals and rings.

• Does the supplier offer the type of fittings I need?

  The supplier you choose should offer the fittings matching the conduit you need for your project.

• Will the supplier deliver the fittings by the time I need them?

  The supplier should be able to deliver the connectors to you with the conduit you purchase.  

• Can the supplier provide a customized solution?

  If your project has distinctive features, you should look for a supplier that can provide conduit and fittings so you can be sure of safe and secure electrical connection to your specifications and standards. 

Why Partner With ANAMET Electrical for Your Electrical Conduit Needs?

Operation of electrical equipment is dependent on safe, reliable and secure electrical connection. Electrical conduit protects electrical connections, which is why understanding what electrical conduit is, what types are available and what to consider before installing conduit is vital. 

Looking for high-quality flexible electrical conduit and fittings? ANAMET Electrical has got you covered! We are an industry-leading provider of flexible electrical conduit and fittings. To learn more about our product offerings, check out our product catalog or contact us today. For specific product questions or pricing details, request a quote.

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