200 Amp Panel with 48A EV Charger Load Calculation (NEC 220 & 625)
Complete electrical demand load breakdown following NEC Article 220.82. Formally verified for electrical permit submissions, service disconnect sizing, and utility service drop requirements.
Connected Appliance Profile & Nameplate Loads
Specific mechanical equipment ratings evaluated for this residential dwelling unit
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) | 6,600 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) | 25,100 VA | Subtotal Group | — |
| General Connected Load Subtotal | 36,200 VA | — | — |
| • First 10,000 VA of General Load | 10,000 VA | 100% | 10,000 VA |
| • Remainder above 10,000 VA | 26,200 VA | 40% | 10,480 VA |
| General Demand Load Subtotal | — | 220.82(B) | 20,480 VA |
| Heating & Air Conditioning (HVAC)Largest Non-Coincident Load • NEC 220.82(C) | 5,600 VA | 100% | 5,600 VA |
| Electric Vehicle Charger (EVSE)Continuous Load • NEC 625.42 | 11,520 VA | 100% / 125% | 11,520 VA |
| TOTAL CALCULATED DEMAND LOAD | — | Total / 240V | 37,600 VA • 156.7 A |
Service Conductor & Grounding Sizing Schedules
Minimum wire gauges and raceway sizes compliant with NEC Table 310.12 and Table 250.66
Master Electrician Inspection & Installation Notes
- Total demand load reaches 156.7A on a 200A panel (78.4% capacity utilization).
- The 200A panel safely accommodates the 48A EVSE (11.52 kW) without exceeding the 80% continuous load threshold.
- A 60A double-pole breaker with #6 AWG copper (or #4 AWG NM-B Romex due to 60°C column) is required for the dedicated EV circuit.
Frequently Asked Code Questions
Can I add a 48 amp EV charger to my 200 amp panel?
Yes, in most 2,000–2,500 sq ft homes, a 48A charger brings total calculated load to roughly 150A–160A, which is comfortably within 200A capacity.
Why does a 48A charger require a 60A breaker?
Per NEC 625.42, EV charging is considered a continuous load (runs for 3+ hours). The circuit breaker and conductors must be sized at 125% of the continuous draw: 48A × 1.25 = 60A.