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AC Power Consumption Formulas:
Single Phase: P = V × I × PF
Three Phase: P = V × I × PF × √3
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AC Power Consumption refers to the amount of electrical power used by AC electrical loads. It is calculated based on voltage, current, and power factor, with different formulas for single-phase and three-phase systems.
The calculator uses standard AC power formulas:
Single Phase: P = V × I × PF
Three Phase: P = V × I × PF × √3
Where:
Explanation: The power factor accounts for the phase difference between voltage and current in AC circuits, representing the efficiency of power usage.
Details: Accurate power calculation is essential for electrical system design, load balancing, energy management, and determining appropriate circuit protection and wire sizing.
Tips: Select phase type, enter voltage in volts, current in amps, and power factor (0 to 1). Ensure all values are positive and power factor is within valid range.
Q1: What Is The Difference Between Single-Phase And Three-Phase Power?
A: Single-phase uses two wires (one phase, one neutral) while three-phase uses three or four wires, providing more efficient power delivery for larger loads.
Q2: What Is Power Factor And Why Is It Important?
A: Power factor measures how effectively electrical power is converted into useful work. Low power factor indicates poor efficiency and may result in utility penalties.
Q3: What Are Typical Power Factor Values?
A: Ideal power factor is 1.0. Typical values range from 0.8 to 0.95 for most industrial and commercial applications.
Q4: When Should I Use Three-Phase Calculation?
A: Use three-phase for industrial equipment, large motors, commercial buildings, and any system specifically designed for three-phase power distribution.
Q5: How Can I Improve Power Factor?
A: Power factor correction capacitors, synchronous condensers, or proper motor sizing can improve power factor and reduce reactive power consumption.