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Calculate phase to ground voltage instantly using our Phase to Ground Voltage Calculator for single-phase and three-phase systems with accurate results.
Electrical calculations should be simple, clear, and reliable. That is exactly why we developed this Phase to Ground Voltage calculator. This online tool helps you calculate phase-to-ground voltage instantly for both single-phase and three-phase power systems. You do not need advanced electrical knowledge or complex formulas. Just enter the required voltage, select the system type, and get accurate results in seconds.
Phase to ground voltage, also known as line-to-neutral voltage or phase voltage, is a critical value in electrical engineering, power distribution, and industrial systems. Whether you are a student, electrician, technician, or engineer, this calculator saves time and eliminates calculation errors.
Phase to ground voltage is the voltage measured between one phase conductor and the ground or neutral point of an electrical system. In real-world applications, this voltage determines equipment ratings, insulation requirements, and safety limits.
In a single-phase system, phase to ground voltage is the same as the supply voltage. In a three-phase star or wye system, phase to ground voltage is lower than the line-to-line voltage and follows a fixed mathematical relationship.
The formula used to calculate phase to ground voltage depends on the type of electrical system.
For a three-phase star or wye system, the formula is:
Phase to Ground Voltage = Line to Line Voltage ÷ √3
The value of √3 is approximately 1.732.
For a single-phase system, the formula is:
Phase to Ground Voltage = Single-Phase Voltage
These formulas are based on standard RMS voltage values and are used globally in electrical engineering and power system design.
Step 1: Select the Electrical System
Choose whether your system is single-phase or three-phase. This selection automatically decides which formula will be applied.
Step 2: Enter the Voltage Value
For a three-phase system, enter the line-to-line voltage. For a single-phase system, enter the supply voltage.
Step 3: Choose the Voltage Unit
You can select volts, kilovolts, or millivolts. The calculator converts all values internally to volts to ensure maximum accuracy.
Step 4: Calculate the Result
Click the calculate button. The tool instantly displays the phase to ground voltage along with clear calculation steps.
Assume a three-phase system has a line-to-line voltage of 415 volts.
Using the formula:
Phase to Ground Voltage = 415 ÷ 1.732
Phase to Ground Voltage = 239.6 volts
This means each phase conductor has approximately 239.6 volts with respect to ground.
For a single-phase system with a voltage of 230 volts, the phase to ground voltage is simply 230 volts.
This calculator is designed for accuracy, speed, and simplicity. It supports multiple voltage units, shows step-by-step calculations, and follows internationally accepted electrical formulas. It is suitable for academic learning, fieldwork, industrial design, and electrical safety analysis.
By using this tool, you avoid manual errors and get reliable results every time.
The Phase to Ground Voltage calculator is a practical and essential tool for anyone working with electrical systems. It delivers precise results using proven formulas and presents them in a user-friendly way. Whether you are dealing with single-phase wiring or three-phase power systems, this calculator helps you make confident and accurate voltage calculations without effort.
Phase to ground voltage is the voltage between a phase conductor and the ground or neutral point of an electrical system.
Yes, in most power systems, phase to ground voltage and line to neutral voltage refer to the same electrical measurement.
This calculator is designed for single-phase systems and three-phase star or wye systems. Delta systems do not have a neutral point, so phase to ground voltage behaves differently.
The √3 factor comes from the 120-degree phase difference between the three phases in a balanced three-phase system.
Yes, it uses standard RMS voltage formulas and precise constants, making it suitable for educational, commercial, and industrial applications.