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Calculates voltage loss in electrical cables due to resistance. High losses reduce efficiency and can prevent motor starting.
Formule
Formula: voltage drop = (2 × length × current × resistance) ÷ 1000
Stapsgewijze handleiding
- 1Current in amperes and cable length
- 2Wire gauge (affects resistance)
- 3Formula: voltage drop = (2 × length × current × resistance) ÷ 1000
- 4Typical target <3% for power, <5% for control
- 5Higher gauge wire reduces drop exponentially
Uitgewerkte voorbeelden
Invoer
100A, 50ft, 10 AWG
Resultaat
3.2V drop
Veelgemaakte fouten om te vermijden
- ✕Using undersized wire to save cost
- ✕Not accounting for temperature derating
Veelgestelde vragen
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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