Delta and Wye are two special configurations of electrical circuits. In this post, you’ll learn the formula for Delta to Wye conversion.

We previously studied series, parallel and series-parallel circuits. Besides these three circuits, there are two special configurations:

*The Delta or Pi configuration**The Wye or Tee configuration*

Delta and Wye circuits contain three resistors. The figure below displays the formulas to convert a delta circuit to Wye:

**An example**

Find the equivalent wye circuit for given delta:

R_{x} = (R_{2}.R_{3}) / (R_{1} + R_{2} + R_{3}) = (6 * 17) / (3 + 6 + 17) = 3.92 Ω … (1)

R_{y} = (R_{1}.R_{3}) / (R_{1} + R_{2} + R_{3}) = (3 * 17) / (3 + 6 + 17) = 1.96 Ω … (2)

R_{z} = (R_{1}.R_{2}) / (R_{1} + R_{2} + R_{3}) = (3 * 6) / (3 + 6 + 17) = 0.692 Ω … (3)

So that was all about Delta to Wye Conversion formula.