Often yes, but not because 200 amps is “the standard size.” An electric dryer and a Level 2 charger are both large 240-volt loads. A 200-amp service usually has more room for that pairing than a 100-amp service, yet the answer still comes from a load calculation or measured demand.
The hidden issue is coincidence. A dryer is intermittent; a Level 2 charger may run for hours. If they overlap, the service has to carry both plus the rest of the house. Educational example: 1,800 ft², a 5,400 VA dryer nameplate (Honda’s published running-watt figure for an electric dryer, used only as a stand-in — use your nameplate), 4,000 VA cooling example, and a 32-amp charger.
| Step (2023-style optional method, educational) | Result |
|---|---|
| General lighting at 3 VA/ft² | 5,400 VA |
| Small-appliance and laundry circuits at 1,500 VA each | 4,500 VA |
| General load including listed nameplates and EVSE | 22,980 VA |
| First 10 kVA at 100%, remainder at 40% | 15,192 VA |
| Larger of the heating or cooling values entered, at 100% | 4,000 VA |
| Calculated load | 19,192 VA · 80.0 A at 240 V |
| Compared with this walk-through’s service rating | 80.0 A is under a 200 A rating by 120.0 A |
Educational walk-through of the optional dwelling-unit method structure in NEC 2023 220.82. Not a permit calculation. 220.82(C) heating/cooling selections can be more involved than “the larger of two numbers,” especially with heat-pump backup strips.
That walk-through is well under 200 A. A heavier combination — 48 A charger, 5,400 VA dryer, 12 kVA range and 10 kVA of backup heat — calculates to about 131.4 A, still under 200 A in this simplified example, but no longer obvious. Tell your electrician whether the charger and dryer might run at the same time, and use the calculator.
This is not a permit calculation, a utility approval, or a substitute for a licensed electrician, HVAC contractor, or the authority having jurisdiction. Panel Headroom is an independent educational site. It is not a utility, a certification body, or a contractor. Electrical and generator work that is done incorrectly can cause fire, shock, or carbon monoxide poisoning. Use the adopted electrical code and manufacturer instructions; pull permits where required.