Voltage Drop Single Phase

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Single Phase Voltage Drop

This calculation is one which is important if a load is 120 volt and more than 50 feet from the source of power, and also important if the load is 240 volt and more than 100 feet from the course of power.

The algebra formula for voltage drop is:

Vd = (2 X k X I X L) divided by cm


X means times
Vd equals voltage drop in volts
2 is for there and back of a single phase circuit
k is the constant calculated by R times cm divided by 1000
I is the actual current the load will draw
L is the distance in feet the load is located from the source

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