电阻色环计算器
根据色环读取电阻器的阻值和容差。
A/cmil
Estimated Ampacity
12.3 A
Wire Area4,107 cmil
Estimated Ampacity vs AWG Gauge Number
公式
## Wire Ampacity **I_max = Area x Current_Density** Typical chassis wiring: 0.003 A/cmil. Always check NEC tables for installations.
计算示例
14 AWG copper wire.
- 01Diameter = 64.08 mils
- 02Area = 4106 cmil
- 03Ampacity = 4106 x 0.003 = 12.3 A
常见问题
What affects ampacity?
Wire gauge, insulation type, ambient temperature, and bundling.
Is this NEC rated?
No. NEC ratings depend on specific conditions. This is an engineering estimate.
What happens if exceeded?
Wire overheats, insulation degrades, fire risk increases.
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