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IEC 60909 system configuration / OSHA 29 CFR 1910.147 (LOTO) · VERIFIED FIXTURE

Dual feed, bus tie, and a two-source fire pump

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WHAT THIS CASE PROVES

Reverse feed, return paths, and multi-point isolation expose any directional connectivity shortcut.

Select a scenario, then inspect the fire pump or BUS A to trace every possible source path.

THE MODEL RECORD

Touch the record. The drawing answers.

Components and wires are the same objects shown above. Hover, focus, or select either view.

Components

IDTypeTerminalsAttributes

Wires / nets

WireConnected terminals

QUERIES FROM THIS MODEL

What this fixture can answer.

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Acceptance assertions

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    SOURCE

    Industry-standard arrangement · a dual-fed fire pump is a classic missed-lockout shape.

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