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How to Find a Motor Tag in an Electrical Wiring Diagram?

When you’re looking for a motor (e.g., MTR-101) inside a large electrical diagram, it can feel like searching for a needle in a haystack. But diagrams are designed with a navigation system to make it easier:

✅ 1. Use the Motor Tag
Every motor has a unique ID or tag (like M1, MTR-101, or P-201). This tag will appear in the power circuit (showing the motor connection) and in the control circuit (showing how the motor is started/stopped).

✅ 2. Follow Cross-References
Next to the motor symbol or its contactor coil, you’ll usually see a reference like “See Pg. 4, B5”.

Pg. 4 → the page number.

B5 → the location on that page (column B, row 5).
This tells you exactly where to continue reading.

✅ 3. Columns & Rows on a Page
Each page of a diagram is divided into a grid (like an Excel sheet):

Rows → numbers (1, 2, 3, …)

Columns → letters (A, B, C, …)

So if a symbol says “C3”, you go to column C, row 3 of that page to find the next related symbol.

✅ 4. Example

Motor M1 shown on Page 2, cell A4.

Its contactor coil shown on Page 5, cell D7.

The reference note on Page 2 will say → “→ Pg. 5, D7”.

This way you can quickly jump across pages and follow the full motor circuit without confusion.

📌 In short:

Motor tag = identity card of the motor.

Cross-reference = address of where to find its other parts.

Page grids = map to navigate the diagram.

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