Single Line Control Diagram Typical Controller Markings Typical Elementary Diagram IEC Typical Controller Markings Typical Elementary Diagram Table 4 Control and Power Connections for Across-the-Line Starters, 600 V or less (From NEMA standard ICS 2-321A.60) 1-Phase 2-Phase, 4-Wire 3-Phase Line Markings L1, L2 L1, L3: Phase 1 L2, L4: Phase 2 L1, L2, L3 Ground, when used
Single Line Control Diagram Note: In this publication the line diagrams show the control circuits only - power circuits are omitted for clarity, since they can be traced readily on the wiring diagrams (heavy lines). A wiring diagram gives the necessary information for actually wiring-up a group of control devices or for
Single Line Control Diagram Single-line diagram is a simplified notation for representing a three-phase power system; Instead of representing each of three phases with a separate line or terminal, only one conductor is represented. Electrical elements such as circuit breakers, transformers, capacitors, bus bars, and conductors are shown by standardized schematic symbols.
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