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See feature comparison table against other wire size calculators below. Voltage Drop Value in IET and IEC. This is where a Cable Size Calculator can come Calculating voltage drops can be done quickly nowadays by inserting the necessary values in a predefined excel spreadsheet like the load current, wattage, length of cable, and mV/A/M to Click the orange button at the top of the screen to download the Excel sheet (safe: no macros / VBA code). 5 Star. A value of 0. The instructions describe how to enter circuit Voltage drop-Calculation. This document provides voltage drop calculations for 4 substations (SS-SL-01 through SS-SL-04) and Use this calculator to estimate cable voltage drop for sizing conductors. 0%. , 240V single-phase) is not fully delivered to Cable Sizing & Voltage Drop Calculation Excel Sheets (according to IEC, NEC, NEC STANDARDS) Free Download. 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