1. 
   Three Phase
   Three-phase refers to an electric power system having at least three conductors carrying voltage waveforms that are 2�/3 radians (120�,1/3 of a cycle) offset in time. Electric utilities generate three phase power and transmit it to load centers where it m
   Found op http://www.youngco.com/young2.asp?ID=4&Type=3
   
   
2. 
   THREE PHASE
   In electrical contracting, a wiring system consisting of 4 wires and used in industrial and commercial applications. This system is suitable for installations requiring large motors. It consists of three hot wires and one ground wire. The voltage in each hot wire is out of phase with the others by 1...
   Found op http://www.proofrock.com/glossary.html
   
   
3. 
   Three-Phase
   In electrical contracting, a wiring system consisting of 4 wires and used in industrial and commercial applications. This system is suitable for installations requiring large motors. It consists of three hot wires and one ground wire. The voltage in each hot wire is out of phase with the others by ...
   Found op http://www.rookinspections.com/glossary/glossaryt.shtml
   
   
4. 
   Three-Phase
   Multiple phase power supply or load that uses at least three wires where a different voltage phase from a common generator is carried between each pair of wires. The voltage level may be identical but the voltages will vary in phase relationship to each o
   Found op http://www.youngco.com/young2.asp?ID=4&Type=3
   
   

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