How to Bend an Offset With EMT


Offsets in EMT, or electrical metallic tubing, usually are made in the field, using a hand bender. The most common reasons for an offset are to avoid an obstacle or to raise the EMT off the surface of the structure to match a knockout in a box or panel. Before marking the conduit for bends, you must make some calculations.

Things You'll Need

  • Tape measure
  • Hand EMT bender
  • Measure the height and determine the angle to be used on the offset. The most common angle for an offset is 30 degrees. Multiply the cosecant of the angle by the height of the offset. The cosecants of commonly used angles are: 10 degrees-5.76, 22.5 degrees-2.6, 30 degrees-2, 45 degrees-1.414, 60 degrees-1.15. For example, if the offset is 6 inches high with a 30-degree angle, multiply 6 inches by cosecant 2 for a total 12-inch length between bends.

  • Measure from the starting edge of the conduit to the obstacle that the offset is going over or around. Mark this spot on the conduit. Measure from the mark back toward the starting edge of the conduit. Determine the distance by multiplying the height of the offset by the cosecant, which in the example in Step 1 is 12 inches. Mark this spot on the conduit. The two marks on the conduit are the starting spots for the bends of the offset.

  • Place the conduit in the hook of the shoe, or head, of the bender with the end of the conduit that is to remain flat aimed away from the rocker on the shoe. Line the arrow on the shoe up with the first mark on the conduit. The lines on the side of the shoe indicate the degrees of angles. Pull the handle bending the conduit until the side of the conduit reaches the line indicating the desired angle.

  • Reverse the bender on the conduit to bend the conduit in the opposite direction. Line the arrow on the shoe up with the second mark. The rocker is on the opposite side of the line from the first bend. Bend the conduit to the desired angle.

Related Searches


Promoted By Zergnet


You May Also Like

  • How to Use a Conduit Bender

    Adding connectors for each joint or turn in conduit is not very economical and is time consuming. Using a conduit bender is...

  • How to Offset Bend Conduit

    Electrical work is grueling enough without having to create perfect sculptures. Ironically, bending conduit to jump over architectural obstacles is one of...

  • Instructions for Bending EMT Conduit

    Some electrical wiring projects require the use of electrical metallic tubing (EMT), more commonly known as conduit. In particular, electrical codes require...

  • How to Bend PVC Electrical Conduit

    PVC electrical conduit covers wires or cables and protects them. Conduit runs underground or on walls. Instead of using connectors at each...

  • How to Measure & Bend Conduit

    Correctly measuring and bending conduit makes the electrical installation process go smoother. Conduit is used to protect electrical wires in situations where...

  • Steps in Bending Conduit Pipe

    Bending conduit pipe is a precise art form typically used by electricians. The pipe must be bent in order to run the...

Related Searches

Check It Out

22 DIY Ways to Update Your Home on a Small Budget

Is DIY in your DNA? Become part of our maker community.
Submit Your Work!