HB

1 photo · 2018

1 photograph tagged HB, 2018.

Electrical panel bank from a former cold storage plant in Minnesota controls refrigeration and power systems. — The switchgear and breaker panels on this wall once distributed power for refrigeration equipment inside a cold storage plant, a facility type built to hold perishable goods like meat, dairy, or produce at controlled low temperatures before modern refrigerated trucking made large centralized cold-storage warehouses less necessary. Ammonia-based compressors were standard in plants of this era, and the switchgear supplying them had to run continuously, since even brief power interruptions could bring storage rooms above safe temperatures and spoil inventory. Plants like this were commonly sited near rail spurs or waterfronts, allowing perishable shipments to move quickly between cold storage and market. The mix of panel styles and added conduit runs on this wall the electrical system was expanded and patched over multiple decades of operation rather than installed all at once.

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