Field glossary

Selective coordination

Only the OCPD nearest the fault opens, leaving every upstream device closed, across the full range of available overcurrents

Used across 3 Anvilfield field guides, most in Electrical.

Also defined as

Datacenter: Full selectivity across the whole fault range, so only the overcurrent device immediately upstream of a fault operates and every device above it holds
Overcurrent devices selected so only the device nearest a fault opens, required on emergency and legally required systems

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