PVC vs. Steel Conduit: Choosing the Right Material for Utility Infrastructure

The debate as to whether to use steel or PVC (Polyvinyl Chloride) continues to exist and it is important to have your information straight when ordering critical electrical supplies. Both materials have their unique characteristics. Sometimes the answer on which to choose is obvious, and sometimes it isn’t obvious (especially after a long day). 

The decision as to which one to use largely depends on the type of project that you have. Whether you have had a long day and just need a refresher or are new to ordering from electrical equipment suppliers, we will highlight the details, advantages, and disadvantages of these materials to help you choose the right conduit.

For all your conduit needs, you can trust Divergent Alliance to deliver some of the best electrical conduit materials. We are a Certified Veteran-Owned business with an operational IBEW shop. We are suppliers of high-quality conduit materials, tools, and PPE to contractors and utility firms nationwide.

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PVC vs. Steel Conduit: What’s the Difference?

PVC is a strong, chemically resistant synthetic resin. Over the years, it has been used in the utility and telecommunications industries to provide protection for wire, cable and other uses. It is an acceptable material for outdoor applications as it is resistant to moisture and sunlight. 

On the other hand, steel conduit is highly durable, making it applicable in exposed areas susceptible to impact. Steel conduit can also withstand high temperatures and pressure. As a result, it can be used in hazardous site conditions in utility, commercial, and industrial applications. 

PVC vs. Steel Conduit: Which is the Best?

Let’s take a look at the advantages and disadvantages for both PVC and steel conduit. 

PVC Conduits

PVC is a rigid but lightweight underground conduit option that is popularly used in residential and light commercial applications. This type of conduit is often used in utility installations, including irrigation systems, water treatment plants, and telecommunications. Low-voltage applications such as data cabling and alarm systems use PVC conduits. 

PVC conduit comes in various options, including SCH 40 and SCH 80. The SCH 40 is lighter and is used in most applications. The SCH 80, on the other hand, is thicker for extra protection and can withstand higher mechanical impact.

Advantages of PVC Conduit

•       PVC is resistant to corrosion and moisture. Conduit made from this material offers good insulation for electrical wiring and minimize the risk of electrical faults.
•       PVC conduit is cost-effective.
•       They are easy to install – installation involves cutting and joining using solvent cement.
•       PVC is non-conductive, which eliminates the risk of electric shock and makes it safer for use in certain applications.

Disadvantages of PVC Conduits

•       PVC conduit can be brittle when exposed to extremely cold temperatures. Therefore, extra protection is needed.
•       PVC is not strong enough to provide sufficient protection in some industrial applications.
•       Although it is resistant to corrosion, PVC conduit is likely to degrade over time when exposed to UV light.

Steel Conduit

Steel conduit remains one of the most popular types of conduit for construction projects. It is popular for being resilient, protective, and durable. Regardless of the type of electrical project, steel conduit offers a solution that lasts for years to come. 

Steel conduit is available in a range of options. The Rigid Metal Conduit (RMC), Intermediate Metal Conduit (IMC), and Electric Metallic Tubing (EMT) are the most common options. Due to its robust nature, steel is able to provide good mechanical protection to the wires. 

Advantages of Steel Conduit

•       Steel is resistant to different conditions, like high impact and string temperatures. Resistance to elements prevents it from getting easily damaged, protecting the wires all the time.
•       Steel is designed to last for long before the need to replace it. Existing steel parts can also be used to form new ones, saving on resources.
•       Steel conduit is strong and non-combustible, ensuring that no spark or flame will affect its surface.
•       Steel is adaptable and flexible, allowing it to be bent at different angles to fit different types of wiring applications.

Disadvantages of Steel Conduit

•       Heavier and more challenging to handle compared to PVC conduit.
•       Higher cost compared to non-metallic options like PVC.

When to Choose PVC over Steel Conduit

Below are some scenarios where PVC is most suitable.

1. Underground Wiring: PVC is ideal for underground and damp places. It is resistant to rust and corrosion, thus protecting the underground wiring from the elements.
2. Lightweight Uses: PVC is lightweight and more flexible, making it a good option when there’s a need for light weight and ease of installation.
3. Cost-Effective Applications: This one speaks for itself. PVC is cheaper than steel conduit. 

When to Choose Steel Conduit

1. High Temperature Areas: Steel conduit can withstand high temperatures and is thus a good option for areas exposed to direct sunlight or high heat.
2. Exposed Wiring: Steel is resistant to physical damage from impact, thus enhancing the safety and longevity of the electrical systems.
3. Industrial and Commercial Use: due to their strength and durability, steel conduit withstands high levels of physical strength, making them ideal for use in commercial and industrial environments. 

Why Choose Divergent Alliance as Your Electrical Equipment Supplier?

Divergent Alliance is one of the top suppliers of electrical wiring conduits, tools, and equipment. We have been in business since 2017 with over 200 manufacturer partnerships, providing reliable solutions for infrastructure systems.

In addition to project material supply, we offer tooling assistance as well as safety equipment and PPE testing. . Contact us here for more information.