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Electrical

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Calculate wire gauge, electrical loads, voltage drop, conduit fill, and lighting for safe, code-compliant wiring. Whether you're adding a circuit, upgrading a panel, or planning a solar install, these tools help you size every component correctly.

Quick Tips

  • Always size wire gauge based on ampacity and distance — long runs need thicker wire to avoid excessive voltage drop.
  • The NEC requires at least one 20-amp kitchen counter circuit for every 4 feet of counter space.
  • Label every breaker in your panel clearly — it saves hours of troubleshooting during future repairs.
  • Hire a licensed electrician for panel upgrades and service changes — permit and inspection requirements exist for safety.
Wire Gauge / Ampacity CalculatorElectrical Load CalculatorVoltage Drop CalculatorCircuit Breaker Sizing CalculatorConduit Fill CalculatorOutlet/Switch Spacing CalculatorGenerator Transfer Switch Sizing CalculatorSolar Electrical Load Offset CalculatorLight Fixture / Lumens Calculator