1. What is Wattage?

Wattage is a measure of electrical power, representing the rate at which electrical energy is transferred by an electric circuit. It is calculated by multiplying voltage (volts) by current (amps).

2. How Does the Calculator Work?

The calculator uses the basic power equation:

Where:

• \( W \) — Wattage (watts)
• \( V \) — Voltage (volts)
• \( I \) — Current (amps)

Explanation: This fundamental equation shows that power consumption increases linearly with both voltage and current.

3. Importance of Wattage Calculation

Details: Calculating wattage is essential for determining electrical load, sizing circuit breakers, selecting proper wire gauges, and estimating energy consumption and costs.

4. Using the Calculator

Tips: Enter voltage in volts and current in amps. Both values must be positive numbers. The calculator will compute the wattage instantly.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between watts and volt-amps?
A: Watts represent real power, while volt-amps represent apparent power. They're equal in DC circuits or AC circuits with purely resistive loads.

Q2: How does wattage relate to motor size?
A: Motor wattage indicates its power output capacity. Higher wattage motors can deliver more mechanical power but require more electrical input.

Q3: Can I use this for three-phase motors?
A: For three-phase motors, you need to include the power factor and use: W = V × I × PF × √3 for balanced three-phase systems.

Q4: Why is my motor drawing more current than calculated?
A: Motors draw more current under load, during startup, or if there are efficiency losses not accounted for in basic calculations.

Q5: How can I reduce motor wattage?
A: Reduce voltage (if possible), reduce mechanical load, or use a more efficient motor design with better power factor.