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How to Calculate Voltage Drop - Recon Electrical
protective conductor pvc insulated and sheathed cable. The actual circuit current is 12.5 A, and the length of run is 14 m. Volt drop = 7.3 x 12.5 x 14 V = 1.28 V 1000 Maximum permissible volt drop is 4% of 240 V = 4 of 240 V = 9.6 V 100 If a 14 m run gives a volt drop of 1.28 V, the length of run for a 9.6 V drop will be:
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