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3-1 Methods of Bending Conduit

When you are installing conduit, you will need to make bends to go over or around obstacles. These bends must be made without reducing the inside diameter of the conduit at the bend. You will make most bends on the job as a part of the installation procedure. These are called field bends. Factory-made bends may be used instead of field bends; however, they increase the cost of the job because they are an added cost and may require more cutting, threading, and bending.

Since most of the bending you do will be done with manual benders, the bending procedures taught will be made with those types of tools. There are basically two types of manual benders used for bending rigid-steel conduit and EMT. They are the rigid bender, called the hickeys, and the EMT bender. The EMT bender is normally made for EMT, but some are made to be used for both EMT and rigid-steel conduit. The EMT bender is capable of making a full 90 bend with a single motion. Conduit sizes up to 1 inch for rigid steel and 1 1/4 inch for EMT can be bent using manual benders. Larger sizes are usually bent with power benders (Figure 3-1).

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Figure 3-1. Benders

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David L. Heiserman, Editor

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Revised: June 06, 2015