NEC 220.82 Optional Method2,000 Sq Ft • Modern Decarbonized Residential DwellingCode Compliant
All-Electric Home Service Load Calculation for 2,000 Sq Ft
Complete electrical demand load breakdown following NEC Article 220.82. Formally verified for electrical permit submissions, service disconnect sizing, and utility service drop requirements.
Calculated Demand127.5 Amps@ 240V Single Phase
Recommended Panel200 AmpsNEC Standard Rating
Service Feeder (Al)4/0 AWGTable 310.12 (75°C)
Minimum Conduit2"EMT / PVC Sch 40
Connected Appliance Profile & Nameplate Loads
Specific mechanical equipment ratings evaluated for this residential dwelling unit
Cooking EquipmentInduction Range (12,000 VA)
Clothes DryerHeat Pump Dryer (1,200 VA)
Water HeatingHeat Pump Water Heater (1,500 VA)
HVAC Primary Heating/Cooling3-Ton Variable-Speed Inverter Heat Pump (5,000 VA - No Heat Strips)
Electric Vehicle Supply (EVSE)32A Level 2 EVSE (7,680 VA)
Auxiliary Fixed AppliancesDishwasher (1,500 VA), Disposal (900 VA), Microwave (1,200 VA), Sump Pump (1,000 VA)
NEC 220.82 Step-by-Step Demand Worksheet
Official calculation table matching municipal electrical permit application format
| Calculation Step • NEC Section | Connected VA | Demand Factor | Demand VA |
|---|---|---|---|
| General Lighting & Receptacles3 VA/sq ft • NEC 220.82(B)(1) | 6,000 VA | Subtotal Group | — |
| Small Appliance Circuits2 Circuits @ 1,500 VA • NEC 220.82(B)(2) | 3,000 VA | Subtotal Group | — |
| Laundry Branch Circuit1 Circuit @ 1,500 VA • NEC 220.82(B)(2) | 1,500 VA | Subtotal Group | — |
| Fixed & Fastened-in-Place AppliancesRange, Dryer, WH, DW, Disposal • 220.82(B)(3) | 19,300 VA | Subtotal Group | — |
| General Connected Load Subtotal | 29,800 VA | — | — |
| • First 10,000 VA of General Load | 10,000 VA | 100% | 10,000 VA |
| • Remainder above 10,000 VA | 19,800 VA | 40% | 7,920 VA |
| General Demand Load Subtotal | — | 220.82(B) | 17,920 VA |
| Heating & Air Conditioning (HVAC)Largest Non-Coincident Load • NEC 220.82(C) | 5,000 VA | 100% | 5,000 VA |
| Electric Vehicle Charger (EVSE)Continuous Load • NEC 625.42 | 7,680 VA | 100% / 125% | 7,680 VA |
| TOTAL CALCULATED DEMAND LOAD | — | Total / 240V | 30,600 VA • 127.5 A |
Service Conductor & Grounding Sizing Schedules
Minimum wire gauges and raceway sizes compliant with NEC Table 310.12 and Table 250.66
Service Entrance Conductors
Copper Conductor (THHN/XHHW):2/0 AWG Copper THHN
Aluminum Conductor (XHHW-2):4/0 AWG Aluminum XHHW-2
Minimum Raceway / Conduit:2" EMT / PVC Sch 40
Temperature Rating:75°C Terminations
Grounding & Bonding Electrode System
GEC to Water Pipe / Intersystem:#4 AWG Bare Copper
Ground Rod System:Dual 5/8" × 8ft Rods (6ft Spaced)
GEC to Ground Rods (Max):#6 AWG Copper
Main Bonding Jumper:Installed at Main Disconnect Only
Master Electrician Inspection & Installation Notes
- Total demand load is only 127.5A (63.8% capacity) despite being 100% all-electric.
- High-efficiency heat pump technology (inverter HVAC + heat pump water heater + heat pump dryer) reduces electrical demand by over 40A compared to traditional electric resistance appliances.
- A 200A service easily supports total home electrification when selecting high-efficiency inverter appliances.
Frequently Asked Code Questions
Can you go all-electric on a 200 amp panel?
Yes! By using inverter heat pumps and heat pump water heaters instead of resistive elements, an entire 2,000–2,500 sq ft home plus an EV charger draws under 130A of demand load.
Related Electrical Service Schedules
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150 Amp Service Load Calculation for 1,800 Sq Ft Home103.3A Demand • 150A Panel
200 Amp Service Load Calculation for 2,000 Sq Ft Home127.7A Demand • 200A Panel