How to Wire a Three Phase Converter

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Converters are necessary when using three-phase power supplies in single-phase systems. Single-phase systems, which are most widely used in residential electrical installations, are not able to relay the powerful current of constant electrical current supplied by the multiple phases of three-phase systems. As the name implies, a converter can receive the multiple phases of the three-phase system, and transform the phases downward into a single phase compatible with residential electrical systems. While the procedure for wiring a converter is simple and easy, it is important to observe strict safety protocols to avoid electrocution.

Things You'll Need

  • Phase converter
  • Wire terminals
  • Wire crimpers
  • Wire strippers
  • Ratchet and socket
  • Flathead screwdriver
  • Padlock
  • Run a grounding cable from the three-phase power supply to the converter, and run another grounding cable from the converter to the electrical device. Strip the ends of the cables one inch back from the ends using wire strippers. Apply terminals to the ends of the cables, then secure them to the cables by crimping them with wire crimpers. Place the terminals over there terminating points, and terminate each terminal using a screw and a flathead screwdriver.

  • Run two cables from the three-phase power supply to the converter. The first phase runs from the power supply to input A on the converter, and the second phase runs from the power supply to input C on the converter. Strip the ends of the cables one inch back from the ends using wire strippers. Apply terminals to the ends of the cables, then secure them to the cables by crimping them with wire crimpers. Place the terminals over there terminating points, and terminate each terminal using a screw and a flathead screwdriver.

  • Run two cables from the converter to the electrical device. One cable should run from output B on the converter to input L2 on the device, and the other lead should run from output C on the converter to input L3 on the device. Strip the ends of the cables one inch back from the ends using wire strippers. Apply terminals to the ends of the cables, then secure them to the cables by crimping them with wire crimpers. Place the terminals over their terminating points, and terminate each terminal using a screw and a flathead screwdriver.

  • Test the circuit with a megger, then turn the power on and test the device.

References

  • "Electrician's Pocket Manual" (Pocket References (McGraw-Hill)); Rex Miller; 2005
  • Photo Credit macro of meter housing image by jimcox40 from Fotolia.com
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