Extreme Networks Alpine 3802, Hardware Manual

Page: 228 / 352

228 Extreme Networks Consolidated Hardware Guide
BlackDiamond 6800 Series Switch Power Supplies
Preparing the DC Cabling
Use the following guidelines when preparing cabling for the DC power supplies:
•
Each DC power supply requires dedicated 60 A service.
• For DC power cables, use 4 AWG, high-strand-count copper wire cable with dual hole lugs that fit
over M6 (metric) terminals that are centered 0.625 inch (15.86 mm) apart.
•
For convenience, the lock washers and nuts that you use to connect the source DC cables to the
power terminals are loosely mounted on the studs of the DC power supply.
NOTE
Add a length of heat-shrink tubing to prevent the crimp area on the lug from coming into contact with
the metal faceplate of the DC power supply.
Figure 111 shows the specifications of the lug that is used to connect the DC power cable to the DC
power supply.
Figure 111: Dimensions of the DC power cable lugs
Use power cables and lugs with the specifications outlined in Table 66.
Attaching the DC Cabling
To attach the cable to the lugs, perform the following steps:
1 Strip 0.5 inches of insulation from the 4 AWG, high strand-count copper wire cable.
2 Insert the cable into the cable lugs.
CAUTION
Ensure that no copper is visible between the lug and the cable insulation
Table 66: Source DC power specifications
Characteristic Specification
DC power cable size 4 AWG, high strand-count copper wire
DC power cable lug Panduit copper, standard barrel, 2-hole lug—Type LDC (Panduit part
number: LCD4-14A-L; Thomas & Betts part number: LCN4-14).
Power 1800 W, -42 to -70 VDC
BD_021
Area for
heat-shrink
tubing
4 AWG,
high-strand-count
conductor
Terminal crimp
2.25 in. (5.72cm)
0.25 in.
(0.64cm)
0.55 in.
(1.40cm)
0.08 in.
(0.20cm)
2 holes
0.267 in.
(0.678cm)
0.37 in.
(0.94cm)
0.625 in.
(1.588cm)