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How to Rewire a Three Phase Transformer for Single Phase

A multi-phase transformer is used to provide multiple power taps for devices that use alternating current. However, if you require a transformer with only a single phase, you may choose to convert a multi-phase transformer into a transformer with a single phase. This can be accomplished by electrically connecting each phase together in a series circuit.

Things You'll Need

Electrical wire
Electrical pliers
Three-phase transformer
Electronic solder
Soldering iron

Instructions

- 1
  Cut two six-inch pieces of wire. Cut two one-inch pieces of wire. Strip 1/2 inch of insulation from the ends of each wire segment.
- 2
  Place one end of the first six-inch wire on the outside terminal of the first phase on the transformer primary. Melt a drop of solder to both the terminal and the wire. Smooth out the soldered joint with the tip of the soldering iron, making sure that the soldered joint is shiny and free of lumps.
- 3
  Solder one end of the first one-inch piece of wire to the inside terminal of the first phase of the transformer primary. Solder the other end of this wire to the outside terminal of the second phase on the transformer primary.
- 4
  Solder one end of the second one-inch piece of wire to the inside terminal of the second phase on the transformer primary. Solder the other end of this wire to the inside terminal of the third phase of the transformer primary.
- 5
  Solder one end of the second six-inch piece of wire to the outside terminal on the third phase of the transformer primary.
- 6
  Connect the loose end of the first six-inch wire to one of the electrical terminals on an AC power source. Connect the loose end of the second six-inch wire to the remaining electrical terminal on the AC power source.

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