Motorola SC 4812ET RF Hardware Installation Manual page 142

Installation Quickstart
– continued
Step
1 Ensure that all three (3) main DC breakers in the Power Cabinet are "OFF."
2 Route the DC conduit from the I/O area of the Power Cabinet to the I/O area of the RF Cabinet. See
Figure 5-1 for suggested location.
NOTE
This step is omitted if the DC conduit is already installed through the concrete pad.
C
3 Route the three (3) RED +27V feed power cables through the conduit and to the DC power connector
in each cabinet through the rubber boot (see Figure 5-6) in the floor of the I/O area.
NOTE
The rubber boot is sized to seal either a #2/0 AWG or #4/0 AWG power cable, if a different sized cable
is used other means may be required to ensure a good seal. A tie wrap or hose clamp must be used to
ensure a good seal around the cables at the boot.
4 Route the three (3) BLACK –27V feed power cables through the conduit and to the DC power
connector in each cabinet through the rubber boot (see Figure 5-6) in the floor of the I/O area.
NOTE
The rubber boot is sized to seal either a #2/0 AWG or #4/0 AWG power cable, if a different sized cable
is used other means may be required to ensure a good seal. A tie wrap or hose clamp must be used to
ensure a good seal around the cables at the boot.
5 At the RF Cabinet end of each DC power cable, strip insulation equal to the length of the crimping lug
barrel, plus an additional 5 mm (0.2").
! CAUTION
Route the cables through the rubber boot BEFORE crimping lug onto wire or damage to the boot can
occur.
6 Trim the top (tapered end) of the cable grommet to allow the grommet to slide over the cable. Ensure
that the grommet fits firmly around the cable.
7 Slide one cable grommet over each cable at the connector box.
8 Insert the cable into the barrel of the right angle crimp lug.
9 Crimp the lug to the cable.
10 Repeat steps 8–9 for the remaining power cable(s).
NOTE
Be sure to observe the polarity of each cable as you install the cables to the power input studs on the
RF Cabinet.
11 Assemble the power cable to the studs as follows:
11a – Place the cable lugs over the power input studs.
11b – Place the M10 flat washer over the stud and on top of the lug.
11c – Place the M10 lock washer over the stud and on top of the flat washer.
142
Table C-6: DC Power Cabling Installation Procedure
SC 4812ET RF and Power Cabinet Hardware Installation Manual
TM
Action
DRAFT
. . . continued on next page
Apr 2001
V0C.03