Calculate Voltage Drop
Resistance from Wire and Load Caused Voltage Drop Along Wire
The higher the current drawn through a wire, the greater the voltage drop. Larger wire size (diameter), measured as “American wire gauge” (AWG) the lower the voltage drop. Larger wire size offers less resistance to current for the load (watts) on the circuit. It is important to size wires according to voltage and load to minimize and control voltage drop. The path of least resistance is larger wire size.