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Voltage Drop Calculator
Calculate voltage drop in cables for DC and single-phase AC circuits.
IS 732 specifies max voltage drop of 3% for distribution circuits in India. Common wire sizes: 1.5 mm² (lights, 6A), 2.5 mm² (sockets, 16A), 4 mm² (AC, heavy loads). Always use ISI-marked wires (BIS certified).
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