14 Installation Guide APC Silcon 240-320kW 480V UPS
990-4049
External Connection
4.1.1 Connecting AC and DC Power Cables (Dual Utility Connection)
Top bar – Utility 2 (L1, L2, L3)
Bottom bar – Output (N/E, L1, L2, L3)
Bottom bar – Utility 1 (N, L1, L2, L3)
Top bar – Ext. DC (X003±, X004±)
Connection in the
bottom of the
cabinet