Load Current(Single Phase Two Wire OS) Calculator

Formula Used:

\[ I = \frac{\sqrt{2} \times P}{V_{ac} \times \cos(\Phi)} \]

Current Overhead AC (I):

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1. What is Load Current(Single Phase Two Wire OS)?

Load Current in a Single Phase Two Wire Overhead System is the current flowing through the overhead AC supply wire when power is transmitted from the source to the load.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ I = \frac{\sqrt{2} \times P}{V_{ac} \times \cos(\Phi)} \]

Where:

\( I \) — Current Overhead AC (Ampere)
\( P \) — Power Transmitted (Watt)
\( V_{ac} \) — Voltage Overhead AC (Volt)
\( \Phi \) — Phase Difference (Radian)

Explanation: This formula calculates the RMS current in a single-phase two-wire system, accounting for the power factor (cos(Φ)) which represents the phase difference between voltage and current.

3. Importance of Load Current Calculation

Details: Accurate current calculation is crucial for proper sizing of conductors, circuit protection devices, and ensuring efficient power transmission in overhead systems.

4. Using the Calculator

Tips: Enter power in watts, voltage in volts, and phase difference in radians. All values must be valid (power > 0, voltage > 0, phase difference ≥ 0).

5. Frequently Asked Questions (FAQ)

Q1: Why is the square root of 2 used in the formula?
A: The √2 factor converts peak voltage/current to RMS values in AC systems, as RMS = Peak/√2 for sinusoidal waveforms.

Q2: What is the significance of phase difference in this calculation?
A: Phase difference (power factor) affects the actual current required to deliver a certain amount of power. Lower power factor requires higher current for the same power.

Q3: What are typical values for phase difference?
A: Phase difference typically ranges from 0 to π/2 radians (0° to 90°), with 0 representing purely resistive load and π/2 representing purely reactive load.

Q4: Can this calculator be used for three-phase systems?
A: No, this calculator is specifically designed for single-phase two-wire overhead systems. Three-phase systems require different formulas.

Q5: What safety considerations should be made when working with overhead systems?
A: Always follow proper safety protocols, use appropriate personal protective equipment, and ensure proper insulation and clearance when working with overhead electrical systems.