1 Phase Power Vs 3 Phase Power | Easiest Explanation

Electrical energy is generated, transmitted and distributed in the form of three phase power. Homes and small premises are connected with single phase power. But most of the time you will find that, 3 phase power is more preferred over 1 phase power. The 3 phase machineries are more efficient than 1 phase. But why it is like that? Why 3 phase power is preferred over 1 phase and what is the basic difference between 3 phase and 1 phase power? So, if you want to get the answers and other details about 1 phase and 3 phase power in the easiest way, I would recommend you to watch the video.

1. Why AC supply is always represented by a SINE wave? Explained – http://www.theelectricalguy.in/why-ac-supply-is-always-represented-by-a-sine-wave-explained/

2. Instantaneous Power – http://www.theelectricalguy.in/activereactive-apparent-power-improved-version/

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Gaurav J
About The Author
- Electrical Engineer. Interest & Study in Electrical Engineering. Currently working with a High-Voltage Switchgear Industry.

1 Comment

  • richardbates

    I am in school learning HVAC and most of us in my class don’t understand negative power. To make it easy assume the power plant generates power which is directly connected to a 120V plug. I have seen explanations where the two prongs of the plug switch from positive to negative and then negative to positive. I have seen pictures showing electrical flows from source (power plant) to Load (plug switch) but don’t understand how power can flow back to the source. Also don’t understand when at the power plant it is generating positive and negative. I get positive and how it flows but where does negative go – it doesn’t go from source to load does it?

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