Correct UPS sizing protects critical loads without overspending on oversized hardware. Start with measured load (kW), apply a power-factor conversion to kVA, then add headroom for growth and inrush.
Checklist: list critical vs non-critical loads; note single-phase vs three-phase; decide autonomy (minutes); choose N or N+1 redundancy; plan battery chemistry and service access.
Zigma engineers can validate your BOM against site conditions, harmonic content, and generator compatibility before procurement.
