vault backup: 2025-10-02 17:00:21

voltage-drop.md

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+---
+id:
+aliases: []
+tags:
+  - destiny/fleeting
+  - type/idea
+---
+# Voltage Drop
+
+> [!info] Ohm's Law
+> $$
+> V = I \times R \quad R = \frac{ V }{ I }
+> $$
+
+$$
+Vd = \frac{ I \times R \times L \times M }{ P }
+$$
+
+$$
+L = \frac{ Vd }{ I \times M } \times \frac{ P }{ R }
+$$
+
+where
+
+- $Vd$ = Maximum Voltage Drop in volts
+- $I$ = Current in Amps
+- $R$ = Resistance in ohms per foot
+- $L$ = Length of wire one way in feet
+- $M$ = Multiplier
+  - $2$ for 1-phase
+  - $\sqrt{3}$ for 3-phase
+- $P$ = Number of parallel runs