1. What is a Home House Generator Calculator?

Definition: This calculator determines the minimum generator size needed for your home by calculating the total wattage requirements.

Purpose: It helps homeowners and electricians properly size a generator to handle both continuous loads and starting surges.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• Total Watts — Minimum generator capacity needed (watts)
• Running Watts — Sum of all continuous power requirements (watts)
• Starting Watts — Highest starting surge among all devices (watts)

Explanation: The running watts represent the continuous load, while starting watts account for the temporary surge when motors start.

3. Importance of Proper Generator Sizing

Details: Correct sizing ensures your generator can handle all electrical loads without overload while being cost-effective.

4. Using the Calculator

Tips:

• Add up the running watts of all appliances you'll power simultaneously
• Identify the appliance with the highest starting watts
• Enter these values to get your minimum generator size

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between running and starting watts?
A: Running watts are continuous power needs, while starting watts are the temporary surge (typically 2-3x running watts) when motors start.

Q2: Should I add a safety margin?
A: Yes, consider adding 10-20% to the calculated total for future needs and efficiency.

Q3: How do I find appliance wattages?
A: Check manufacturer labels or use our Appliance Wattage Calculator tool.

Q4: What about whole-house vs. essential circuits?
A: This calculator works for both - just include only the circuits/appliances you plan to power.

Q5: Does this account for power factor?
A: No, this gives a basic estimate. For precise sizing, consult an electrician.