Preparing for Installation 2-17
Site Requirements Guidelines
Each set of power terminals on the DC-input power supply faceplate consists of two 6-mm,
metric-threaded, nickel-plated brass studs centered 0.625 inch apart. The earth ground studs
extend 0.52 inch (13.2mm) above the power supply faceplate; the set of positive (+) and
negative (–) studs extend 0.9 inch (22.9 mm) above the faceplate. The nickel plating on the
studs enhance their conductivity and ensure corrosion resistance.
Figure2-6 Dimensions of the Lugs Used with the Source DC Power Cables
For convenience, the lockwashers and nuts for connecting the source DC cables to the
nickel-plated brass studs are loosely mounted on the studs ready for use.
In making source DC connections to the power supply, use the power cables and lugs
having the specifications outlined in Table2-2. An equivalent 2-hole lug is acceptable as a
substitute for the Panduit DC power cable lug.
Table2-2 Specifications of the Source DC Power Cable and Lug
Characteristic Specification
DC power cable size #4 AWG, high strand count copper wire
DC power cable lug Panduit copper, standard barrel, 2-hole lug—Ty pe
LDC (Panduit part number: LCD4-14A-L). An
equivalent 2-hole lug is acceptable as a substitute
for the Panduit part.
4 AWG,
high-strand-count
conductor
Terminal crimp
H7684
2.25
.55
.08 0.25 0.37
0.625
End View
0.267
2 holes
All measurements in inches
Area for
heat-shrink
tubing