Calculations follow NEC 220.82 optional calculation method for dwelling units. Results you can submit for permit approval.
Choose between NEC standard calculation (Article 220 Part III) and optional method (220.82). Compare results to select the best approach.
Automatically recommends appropriate service size based on calculated load. Shows 100A, 125A, 150A, 200A, or larger as needed.
Includes all residential loads: general lighting, small appliance circuits, laundry, HVAC, water heater, range, dryer, and custom loads.
Automatically applies proper NEC demand factors for heating, cooling, and other loads. Ensures accurate, not oversized, service calculations.
Shows step-by-step calculations with all demand factors applied. Perfect for submittals and explaining results to inspectors.
NEC 220.82 provides an alternative method for calculating residential service loads that typically results in smaller service sizes than the standard method. It accounts for the fact that not all loads operate simultaneously by applying demand factors. This method is widely accepted and often preferred for residential services.
The optional method (220.82) usually results in smaller, more economical service sizes and is permitted for single-family dwellings. Use the standard method when required by local code or for multifamily buildings. Load Calc Residential lets you compare both methods to choose the best approach for your project.
Enter your home's square footage and all major electrical loads (HVAC, water heater, range, etc.). The app calculates total demand load and recommends the appropriate service size. Most modern homes need 200A service, but smaller homes or those without electric heat may only need 100A or 150A.
Yes, Load Calc Residential is perfect for service upgrade calculations. Enter the existing and planned loads to determine if an upgrade is needed and what size service is required. The detailed report helps justify upgrade recommendations to customers.
Stop doing load calculations by hand. Get accurate results in seconds.
Download on the App Store - $1.99