vault backup: 2025-10-08 18:16:15

alternating-current.md

@@ -36,27 +36,32 @@ The voltage measured between any line and neutral is called phase voltage.
 208Y/120V
 480Y/277V
 
+In a 3-phase wye connected system,
+ignoring the difference in voltage,
+is voltage drop calculated differently
+between a line to line load and a line to neutral load
+
 ### Voltage Systems
 
 120/240V 1-Phase 3-Wire:
-- 120V 1-Phase 2-Wire # Line to Neutral
-- 240V 1-Phase 2-Wire # Line to Line
+* 120V 1-Phase 2-Wire # Line to Neutral
+* 240V 1-Phase 2-Wire # Line to Line
 
 120/208V 3-Phase 4-Wire:
-- 120V 1-Phase 2-Wire # Line to Neutral
-- 208V 1-Phase 2-Wire # Line to Line
-- 208V 3-Phase 3-Wire # Line to Lines
+* 120V 1-Phase 2-Wire # Line to Neutral
+* 208V 1-Phase 2-Wire # Line to Line
+* 208V 3-Phase 3-Wire # Line to Lines
 
 277/480V 3-Phase 4-Wire:
-- 277V 1-Phase 2-Wire # Line to Neutral
-- 480V 1-Phase 2-Wire # Line to Line
-- 480V 3-Phase 3-Wire # Line to Lines
+* 277V 1-Phase 2-Wire # Line to Neutral
+* 480V 1-Phase 2-Wire # Line to Line
+* 480V 3-Phase 3-Wire # Line to Lines
 
 wiring-configurations:
-- 1-Phase 2-Wire # Line to Neutral or Line to Line
-- 1-Phase 3-Wire # Line to Line and Line to Neutral
-- 3-Phase 3-Wire # Line to Lines
-- 3-Phase 4-Wire # Line to Lines and Line to Neutral
+* 1-Phase 2-Wire # Line to Neutral or Line to Line
+* 1-Phase 3-Wire # Line to Line and Line to Neutral
+* 3-Phase 3-Wire # Line to Lines
+* 3-Phase 4-Wire # Line to Lines and Line to Neutral
 
 ## Active and Reactive Power
 
@@ -65,27 +70,27 @@ and the electromagnetic "inertia" of inductance and capacitance,
 inherent of all matter,
 the power in an AC circuit is divided into two components:
 
-- **Active Power**
+* **Active Power**
   (abbreviated $P$, measured in watts)
-  also known as real power, is power that *does work*. 
+  also known as real power, is power that _does work_.
 
-- **Reactive Power**
+* **Reactive Power**
   (abbreviated $Q$, measured in volt-amperes reactive (VAR))
   transfers no net energy to the load.
 
 derived from these components are others:
 
-- **Complex Power**
+* **Complex Power**
   (abbreviated $S$, measured in volt-amperes (VA))
   is the vector sum of the active and reactive components.
   It is "complex" because it exists on the real and imaginary axes
   of active and reactive power respectively.
 
-- **Apparent Power**
+* **Apparent Power**
   (abbreviated $|S|$, measured in volt-amperes (VA))
   is the magnitude of the complex power vector.
 
-- **Power Factor**
+* **Power Factor**
   (abbreviated $\text{PF}$, unitless)
   is the ratio of active power to apparent power.
 
@@ -97,16 +102,3 @@ $$
 
 Capacitance and inductance can both be measured in VAR,
 but their effects cancel each other out rather than add.
-
-## Motors
-
-1hp = 746 watts
-
-full-load current (FLC) / full-load amperes (FLA)
-
-minimum circuit ampacity (MCA)
-
-$$
-\text{MCA} = 1.25 \times \text{FLC}
-$$
-