12V Voltage Drop Calculator + Chart (0-200 Feet Away)
How To Calculate 12V Voltage Drop And Determine Wire Gauge. For all 12V DC currents, we can use this 12V DC voltage drop formula: V D = 2 × L × K × I / CM. We see that voltage drop (V D) depends on the length of the wire (L), specific wire resistivity (K), and current (I) om our example, we know that the wire length is 20 feet, and the current is 50 amps.
阅读更多