Line voltage refers to the amount of voltage measured between any two line conductors in a balanced three-phase system. With the above circuit, the line voltage is roughly 208 volts. Phase voltage refers to the voltage measured across any one component (source winding or load impedance) in a balanced three-phase source or load.

A "wye" (Y) transformer connects each winding from a phase wire to a common neutral point. A single three-phase transformer can be used, or three single-phase transformers. In an "open delta" or "V" system, only two transformers are used.

It can be derived from Wye-Wye (Star to Star), Delta-Wye or High leg delta configuration of primary and secondary windings of the transformer. In this post, we will consider the Wye-Wye connection for the single phase and three phase 208V and additionally 120V single phase distribution panel wiring.

2021年4月16日 · Understanding the differences between 208 3 phase delta and wye can be critical to ensuring that your electrical installations are correctly configured. This guide will explain the differences between the two configurations, how they're used, and the advantages of each.

2024年10月6日 · High Leg Delta (also known as Power Leg or Wild Leg) is a three phase, four wire power distribution system used in commercial buildings in North America especially in rural and older installations. The main advantages of the high leg delta system is that there are three types of available voltage i.e. 120V, 208V and 240V.

The three-phase, four-wire 120-208 V Wye Configuration system can provide electricity to the following applications: 120 V, Two-wire ungrounded to grounded single phase for residential branch circuit purposes and other uses; 208 V, Two-wire ungrounded to ungrounded single phase for residential branch circuit purposes and other uses

2014年6月27日 · With a 120/208 WYE you will have 208 volts A/B, A/C, B/C, and 120 volts A,B,C to neutral

When comparing Delta vs. Wye systems, both measure 208VAC between any two hot wires, but 3-phase Wye systems also measure 120VAC between any hot wire and neutral wire. In other words, the Wye system’s neutral wire is what allows two different voltages and powers both 3-phase and single-phase devices in the data center.

2013年3月18日 · A 120/208 system is wye connected. This means that each phase will have 120 to neutral/ground and 208 between any two of them. The best way I can think of to describe a 120/240∆ system would be to think of it as single phase with a third phase added on.

2009年6月22日 · If I understand things correctly 120/208v implies the Line voltage (voltage measured between any two line conductors) is 208 volt and the phase voltage (voltage measured between a line an the neutral) is 120 volt. Where does this 208v come from? How does 120v lines add up to make 208v? Are they any books out there that you would recommend?