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🔌 Wire Gauge Calculator
Calculate wire gauge based on current and length
📏 Input Parameters
📊 Results
Recommended Wire Gauge
12 AWG
Voltage Drop
0.36 V
📚 Understanding Wire Gauge
What is Wire Gauge?
Wire gauge (AWG - American Wire Gauge) is a standardized system for measuring wire diameter. Lower gauge numbers indicate thicker wires that can carry more current.
Why Wire Gauge Matters
Using the correct wire gauge is critical for safety and performance:
- Safety: Undersized wire can overheat and cause fires
- Efficiency: Proper gauge minimizes voltage drop and power loss
- Reliability: Adequate wire prevents equipment malfunction
- Code Compliance: Electrical codes specify minimum wire sizes
Voltage Drop
Voltage drop is the reduction in voltage along a wire due to its resistance. Keep voltage drop under 3% for most applications, 5% maximum for some cases.
Voltage Drop = Current × Resistance × 2 (for round trip)
Common Wire Gauges
- 18 AWG: Low-power devices, LED strips (up to 2A)
- 16 AWG: Light fixtures, small appliances (up to 3.7A)
- 14 AWG: General circuits, outlets (up to 5.9A)
- 12 AWG: Kitchen appliances, AC units (up to 9.3A)
- 10 AWG: Electric dryers, water heaters (up to 15A)
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