1. What is a Motor Power Consumption Calculator?

Definition: This calculator estimates the electrical energy consumed by an electric motor based on its power rating and operating time.

Purpose: It helps engineers, facility managers, and homeowners determine electricity usage for motor-driven equipment.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( E \) — Energy consumption (kilowatt-hours)
• \( P \) — Motor power (watts)
• \( t \) — Operating time (hours)

Explanation: The motor's power is multiplied by operating time to get watt-hours, then divided by 1000 to convert to kilowatt-hours (kWh).

3. Importance of Power Consumption Calculation

Details: Accurate energy calculations help estimate electricity costs, size backup power systems, and evaluate energy efficiency.

4. Using the Calculator

Tips: Enter the motor's rated power in watts and the expected operating time in hours. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Where can I find the motor's power rating?
A: Check the motor nameplate or manufacturer specifications, typically listed in watts (W) or kilowatts (kW).

Q2: Should I use peak or average power?
A: For most applications, use the motor's rated continuous power. For variable loads, consider average power.

Q3: Does this account for motor efficiency?
A: No, this calculates electrical input power. For mechanical output, divide by the motor efficiency factor.

Q4: How do I convert horsepower to watts?
A: 1 HP = 746 watts. Multiply horsepower by 746 before entering the value.

Q5: Can I calculate daily/monthly consumption?
A: Yes, multiply the result by days used per month for monthly estimates.