⚡ Breaker & Wire Size Calculator
Find the right breaker, wire, and outlet for your project
📋 NEC 2023 CompliantElectric Stove / Oven
Range, Cooktop, or Wall Oven · NEC 220.55
💡 Check sticker inside oven door or on back. Look for "kW."
Panel → Stove
Can't find the kW?
Most standard ranges are 8–12 kW. Pro-style: 12–18 kW. Use 12 if unsure.
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Air Conditioner / Heat Pump
Central AC, Heat Pump, Mini-Split · NEC 440
Best method!
Find MCA & MOP on the data sticker on your outdoor unit.
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EV Charger
Home charging station · NEC 625
125% Continuous Load Rule
EV chargers run for hours. Breaker must be 125% of charger amps. 40A charger → 50A breaker.
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Electric Dryer
Clothes dryer · NEC 220.54
💡 Most dryers are 4.5–5.8 kW. Use 5.5 if unsure.
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Electric Water Heater
Tank or Tankless · NEC 422.13
💡 Tank: 3–6 kW. Tankless: 12–36 kW.
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Custom Circuit
Any load — watts or amps · NEC 210
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📋 Copper Wire & Breaker Quick Reference
15A
14 AWG
Copper
20A
12 AWG
Copper
30A
10 AWG
Copper
40A
8 AWG
Copper
50A
6 AWG
Copper
60A
4 AWG
Copper
80A
3 AWG
Copper
100A
1 AWG
Copper
