Hello to all,
As an introduction, even though it is obvious to you, in three phase four wire 480V/277V wye system, we get the phase voltage of 277V by connecting one terminal of the load to the live end of a phase, and the other terminal to the neutral wire.
So for a distance L between tranformer/generator and load, we have the length L of the live conductor, and the length L of the neutral wire.
When I calculate the voltage drop between source and load, along the 2 wires, I am considering the distance L multiplied by 2.
Question: When the three circuit is perfectly balanced, the current through the neutral wire is 0 (zero). For the voltage drop along that perfectly balanced load, should I count only the live wire (distance L), or should I also add the length L of the neutral?
Personally, I think right now that I should count both wires - phase and neutral.
Thank you in advance for your answers.
Florin
As an introduction, even though it is obvious to you, in three phase four wire 480V/277V wye system, we get the phase voltage of 277V by connecting one terminal of the load to the live end of a phase, and the other terminal to the neutral wire.
So for a distance L between tranformer/generator and load, we have the length L of the live conductor, and the length L of the neutral wire.
When I calculate the voltage drop between source and load, along the 2 wires, I am considering the distance L multiplied by 2.
Question: When the three circuit is perfectly balanced, the current through the neutral wire is 0 (zero). For the voltage drop along that perfectly balanced load, should I count only the live wire (distance L), or should I also add the length L of the neutral?
Personally, I think right now that I should count both wires - phase and neutral.
Thank you in advance for your answers.
Florin