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Πώς να υπολογίσετε το Cable Voltage Drop2

Τι είναι το Cable Voltage Drop2;

Calculates voltage loss in electrical cables due to resistance. High losses reduce efficiency and can prevent motor starting.

Τύπος

Formula: voltage drop = (2 × length × current × resistance) ÷ 1000

Οδηγός βήμα προς βήμα

  1. 1Current in amperes and cable length
  2. 2Wire gauge (affects resistance)
  3. 3Formula: voltage drop = (2 × length × current × resistance) ÷ 1000
  4. 4Typical target <3% for power, <5% for control
  5. 5Higher gauge wire reduces drop exponentially

Worked Examples

Εισαγωγή
100A, 50ft, 10 AWG
Αποτέλεσμα
3.2V drop

Common Mistakes to Avoid

  • Using undersized wire to save cost
  • Not accounting for temperature derating

Frequently Asked Questions

Why does voltage drop matter?

Reduces equipment voltage, increases losses, causes motors to start slowly, reduces efficiency.

How much does proper wire size cost vs. undersized?

Proper size costs 10-20% more initially but saves 5-10% energy costs over life.

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