How To Cut Flexible Electrical Conduit

How to Cut Flexible Electrical Conduit: A Comprehensive Guide

Cutting flexible electrical conduit, whether it's liquidtight flexible metal conduit (LFMC), flexible metal conduit (FMC), or other types, requires the right tools and techniques to ensure a clean, safe, and efficient cut. This guide will walk you through the process, covering different methods and safety precautions. Improper cutting can lead to damaged wires or sharp edges, so precision is key.

Choosing the Right Tools

The best tool for cutting flexible electrical conduit depends on the material and your preference. Here are the most common options:

• Tubing Cutters: These specialized cutters are designed for clean, precise cuts on various types of conduit. They offer excellent control and minimize burrs. Different sizes are available to accommodate different conduit diameters.

• Hacksaw: A hacksaw with a fine-tooth blade is a versatile option, particularly for thicker conduits or when a tubing cutter isn't readily available. However, this method requires more care to avoid damaging the conduit.

• Reciprocating Saw (Sawzall): For faster cutting, especially with larger diameter conduits, a reciprocating saw with a metal-cutting blade can be used. This method requires precision to avoid excessive damage.

• Angle Grinder with Abrasive Cut-off Wheel: While effective, this method generates sparks and requires safety precautions like eye protection and a well-ventilated area. It is best used for larger-diameter conduits or when other methods are impractical.

Step-by-Step Cutting Guide (Using a Tubing Cutter)

This guide focuses on the tubing cutter method, which is generally recommended for its precision and safety:

1. Measure and Mark: Use a measuring tape to determine the exact cutting location. Mark the conduit with a pencil or marker.

2. Secure the Conduit: Firmly hold the conduit in place. Using a vise or clamp is highly recommended for better control and safety.

3. Position the Cutter: Place the tubing cutter around the conduit at the marked line. Ensure the cutter's wheels are evenly positioned around the conduit's circumference.

4. Rotate and Tighten: Slowly rotate the cutter around the conduit, gradually tightening the cutter's wheel. Avoid applying excessive force to prevent damaging the cutter or the conduit.

5. Complete the Cut: Continue rotating and tightening the cutter until the conduit is completely severed. A clean, straight cut should result.

6. Deburr (If Necessary): Inspect the cut ends for any burrs or sharp edges. Use a deburring tool or fine-grit sandpaper to smooth out any imperfections. This prevents potential wire damage during installation.

Safety Precautions

• Always wear safety glasses: Protecting your eyes from sparks or debris is crucial.

• Use appropriate gloves: This prevents cuts and improves grip.

• Proper ventilation: When using methods that generate sparks or fumes, ensure adequate ventilation.

• Work in a stable and organized area: Avoid distractions and ensure a clear workspace.

• Handle conduit carefully: Avoid dropping or bending the conduit excessively to prevent damage.

• Dispose of waste properly: Follow local regulations for disposing of metal scraps.

Different Conduit Types and Considerations

While the cutting techniques are similar, certain conduit types might require minor adjustments:

• Liquidtight Flexible Metal Conduit (LFMC): Often slightly tougher than standard FMC, requiring slightly more pressure or a sharper blade.

• Flexible Metal Conduit (FMC): Generally easier to cut than LFMC.

• High-Temperature Conduit: May require specialized tools and techniques due to its material properties.

By following these guidelines and prioritizing safety, you can efficiently and safely cut flexible electrical conduit for your projects. Remember to always consult local electrical codes and regulations before undertaking any electrical work.