Wiring Instructions For A DC Power SupplyYour system supports up to two –(48–60) V DC power supplies (when available).WARNING: For equipment using –(48–60) V DC power supplies, a qualified electrician must perform all connectionsto DC power and to safety grounds. Do not attempt connecting to DC power or installing grounds yourself. Allelectrical wiring must comply with applicable local or national codes and practices. Damage due to servicing thatis not authorized by Dell is not covered by your warranty. Read and follow all safety instructions that came with theproduct.CAUTION: Wire the unit with copper only, unless otherwise specified, use only 10 American Wire Gauge (AWG)wire rated minimum 90 ºC for source and return. Protect the –(48–60) V DC (1 wire) with a branch circuit over-current protection rated 50 A for DC with a high interrupt current rating.CAUTION: Connect the equipment to a –(48–60) V DC supply source that is electrically isolated from the AC source(reliably grounded –(48–60) V DC SELV source). Ensure that the –(48–60) V DC source is efficiently secured to earth(ground).NOTE: A readily accessible disconnect device that is suitably approved and rated shall be incorporated in the fieldwiring.Input Requirements• Supply voltage: –(48–60) V DC• Current consumption: 32 A (maximum)Kit Contents• Dell part number 6RYJ9 terminal block or equivalent (1)• #6-32 nut equipped with lock washer (1)Required ToolsWire-stripper pliers capable of removing insulation from size 10 AWG solid or stranded, insulated copper wireNOTE: Use alpha wire part number 3080 or equivalent (65/30 stranding)Required Wires• One UL 10 AWG, 2 m maximum (stranded) black wire [–(48–60) V DC]• One UL 10 AWG, 2 m maximum (stranded) red wire (V DC return)• One UL 10 AWG, 2 m maximum green/yellow, green with a yellow stripe, stranded wire (safety ground)Assembling And Connecting The Safety Ground WireWARNING: For equipment using –(48–60) V DC power supplies, a qualified electrician must perform all connectionsto DC power and to safety grounds. Do not attempt connecting to DC power or installing grounds yourself. Allelectrical wiring must comply with applicable local or national codes and practices. Damage due to servicing thatis not authorized by Dell is not covered by your warranty. Read and follow all safety instructions that came with theproduct.1. Strip the insulation from the end of the green/yellow wire, exposing approximately 4.5 mm (0.175 inch) of copperwire.2. Using a hand-crimping tool (Tyco Electronics, 58433-3 or equivalent), crimp the ring-tongue terminal (JeesonTerminals Inc., R5-4SA or equivalent) to the green/yellow wire (safety ground wire).79
