Wiring Instructions for a DC PSU
Quantum Smart-1 6000-L/6000-XL Appliances Replacing DC Power Supply Units|9
Wiring Instructions for a DC PSU
Warning - For equipment using -(48-60)V DC PSUs, a qualified electrician must perform
all connections to DC power and to safety grounds. Do not attempt connecting to DC
power or installing grounds yourself. All electrical wiring must comply with applicable
local or national codes and practices. Damage due to servicing that is not authorized is
not covered by your warranty.
Caution - Wire the DC PSU with copper only. Unless otherwise specified, use only 10
American Wire Gauge (AWG) wire rated minimum 90°C for source and return. Protect
the -(48-60)V DC (1 wire) with a branch circuit over-current protection rated 50A 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).
Kit Contents:
nTerminal block ("RTN" and "-48V")
nM3.5 x 0.06 (#6-32) nut equipped with a lock washer
Required wires:
nOne UL 10 AWG, 2 m maximum (stranded) black wire [-(48-60)V DC].
nOne UL 10 AWG, 2 m maximum (stranded) red wire (V DC return).
nOne UL 10 AWG, 2 m maximum, green with a yellow stripe, stranded wire (safety ground).
To assemble and connect safety ground wire:
1. Remove the insulation from the end of the green or yellow wire, exposing approximately 4.5 mm
(0.175 inch) of copper wire.
2. Using a hand-crimping tool (Tyco Electronics, Manufacturer Part Number 58433-3, or equivalent),
crimp the ring-tongue terminal (Jeeson Terminals Inc., R5-4SA, or equivalent) to the green and
yellow wire (safety ground wire).
3. Connect the safety ground wire to the grounding post on the back of the system by using a #6-32 nut
equipped with a locking washer.
