In this article, we will explore this topic and provide insights into the limitations and best practices for bending installed conduit.
Understanding the Conduit Basics:
Before delving into the question of bending installed conduit, let’s first understand the basics of conduit systems. Conduit is a pipe-like structure designed to house and protect electrical wires. It is typically made of metal or plastic, and it can be rigid or flexible. Conduit is utilized in both residential and commercial settings to meet electrical code requirements, minimize potential hazards, and facilitate maintenance and repairs.
Bending Conduit: The Initial Installation:
During the initial installation, electricians often need to bend conduit to accommodate various factors, such as the layout of the building, proximity to other structures, and obstructions in the path. This bending process, done before the conduit is installed, allows for precise shaping to fit the specific requirements of the electrical system.
Once the conduit is installed and connected to electrical boxes or other termination points, bending the installed conduit might seem like a challenge. However, it is possible to bend installed conduit with careful consideration and following the necessary guidelines. Here are some key points to keep in mind:
1. Assess the Conduit Material:
The ability to bend installed conduit largely depends on the material used. Rigid metal conduit (RMC) is challenging to bend after installation due to its stiffness and strength. It requires specialized tools like a conduit bender or a hydraulic pipe bender. On the other hand, flexible conduit, such as Electrical Metallic Tubing (EMT) or PVC conduit, is more pliable and easier to bend or manipulate after installation.
2. Consider the Conduit Type:
Different types of conduit have varying degrees of flexibility and bending capabilities, even after installation. EMT is a thin-walled metallic conduit known for its excellent bendability. It can be bent by hand or using handheld bending tools even after installation. PVC conduit, which is a non-metal option, is also relatively easy to bend, as it is more flexible than rigid metal conduit.
3. Evaluate Space and Accessibility:
To bend installed conduit, you need sufficient space to maneuver and exert pressure without causing damage to the conduit or electrical cables. Evaluate the accessibility of the conduit, ensuring that you have enough clearance to complete the bending process safely.
4. Determine the Bending Angle:
When bending installed conduit, it is crucial to have a precise bending angle in mind. Start with small bends and gradually increase the angle if necessary. Be cautious not to over-bend, as this can create stress points and potential cable damage over time.
5. Utilize Proper Tools and Techniques:
Using the correct tools and techniques is crucial for safe and effective bending of installed conduit. Hand benders, conduit benders, or heat guns (for PVC conduit) can assist in achieving the desired bends. Avoid applying excessive force or using improper tools, as this can cause the conduit to kink, flatten, or break.
While bending installed conduit presents its challenges, it is indeed possible with careful consideration and adherence to proper techniques. Understanding the conduit material, type, space limitations, and using the appropriate tools are all critical factors to ensure a successful bending process without compromising the integrity of the conduit or the electrical system. However, if you are uncertain or lack experience, it is always advisable to consult a professional electrician to avoid any potential risks or damages.