Load Calculator
Calculate electrical load requirements for your home or building with our comprehensive calculator. Determine total load, circuit requirements, and safety margins based on your electrical specifications.
Step 1: Electrical Load
Understanding Load Types
Different building types have different electrical load requirements. Residential typically ranges from 1.5-4 W/sq ft, commercial from 6-10 W/sq ft, and industrial can exceed 15 W/sq ft.
Step 2: Appliance Load
About Power Factor
Power factor represents the efficiency of electrical power usage. Most residential systems have a power factor of 0.95-1.0, while industrial systems with motors may have lower power factors (0.7-0.9).
Load Calculation Results
Total Electrical Load Required
Important Safety Note
This calculator provides estimates for informational purposes only. Always consult with a licensed electrician for actual electrical design and installation. Electrical work can be dangerous and must comply with local building codes.
Typical Appliance Power Consumption
Understanding Appliance Load
Appliance loads vary based on size, efficiency, and usage patterns. High-power appliances like ovens, dryers, and air conditioners contribute significantly to total load. Always check appliance specifications for exact power requirements.
Circuit Requirements
| Circuit Type | Typical Rating | Recommended Quantity | Purpose |
|---|---|---|---|
| Lighting Circuits | 15-20 A | 2-3 | General lighting and outlets |
| Appliance Circuits | 20 A | 3-4 | Kitchen and laundry appliances |
| Dedicated Circuits | 20-50 A | 2-3 | HVAC, oven, water heater |
| Main Service Panel | 100-200 A | 1 | Total building supply |
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