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NEC 220 Load Calculation
Complete each section to generate a load schedule and recommended generator size per NEC 220.82 (Optional Method).
1 - Prepared by
Your company and contact info. Save your form once and these fields will autofill next time.
2 - Customer & site
3 - Electrical service
4 - Fuel type
5 - Structure & coverage
6 - HVAC units 0 units
Include all heat pumps, A/C condensers, air handlers, and furnaces. Enter nameplate amperage from the equipment label.
7 - Cooking appliances 0 items
8 - Water heaters 0 units
9 - EV chargers 0 chargers
Per NEC 220.57, list each EVSE circuit. Include level 2 (240V) and DC fast chargers.
10 - Pumps & motors 0 loads
Include well pumps, sewage ejectors, pool/spa pumps, irrigation, and sump pumps. Largest single motor will be calculated at 125% per NEC 430.
11 - Other electrical loads
12 - Transfer switch & installation
13 - Attachments 0 files
Upload supporting documents that should travel with this estimate. Helpful to include: a clear photo of your main panel label, site plan or survey, and property photos. Images will be embedded in the printed report. PDFs will be listed as references (send separately).
14 - Customer notes
Load calculations per NEC 220.82 (Optional Method). For existing dwellings with metered load data, NEC 220.83 may also apply. Results are for estimation purposes only. A licensed electrician must verify final sizing, conductor sizing, and AHJ compliance before installation.
