Define the lead-lag sequence
A duplex pump panel wiring diagram should make the two motor circuits, level or pressure signals, lead-lag alternation, standby response, alarms, and control power clear. The diagram must also identify field wiring and maintenance boundaries.
Inputs to document
| Element | Why it matters |
|---|---|
| Pump and motor schedule | Defines starters, drives, and protection interfaces |
| Level or pressure signals | Establishes automatic commands and alarms |
| Lead-lag logic | Defines alternation and failure response |
| Local/remote controls | Separates operator, PLC, and field ownership |
| Cable, terminals, and grounding | Supports installation and service records |
Scope boundary
This guide does not provide a construction wiring method or safety procedure. The final diagram must be reviewed by the responsible electrical and controls engineers.
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