How to Change a 3 Phase Air Compressor to a Single Phase

Written by katrina matterhorn
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A majority of commercial air compressors are designed with 3-phase motors. This can be a potential issue when it comes to home use as most homes are designed with single-phase power in order to help conserve energy. If you have a commercial air compressor that you wish to make compatible for use in your home, however, you can use a 1-to-3 phase converter to switch the compressor from 3-phase to a single phase.

Skill level:
Moderate

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Things you need

  • Socket wrench set
  • Rotational 1-to-3 phase converter
  • Screwdriver

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Instructions

  1. 1

    Turn off the 3-phase power source of the air compressor. This is a safety precaution when working with electricity.

  2. 2

    Locate the red, blue and black 3-phase power lines from the air compressor. Connect the black wire to L1, the red wire to L2 and the blue wire to L3 of the 1-to-3 phase converter. Make sure to secure the wires tightly.

  3. 3

    Attach the single phase red and black power lines to the 3-phase terminal connections on the 1-to-3 phase converter. Look for a screw-type connection. Tighten with a screwdriver.

  4. 4

    Plug the converter into a power source. Doing so will set the air compressor from a 3-phase to a single phase.

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