Ac Power Cabling - Motorola SC 4812ET RF Hardware Installation Manual

Step
11d – Place the M10 nut over the stud and on top of the washer.
! CAUTION
Exceeding the torque limit may damage the stud.
11e – Torque (tighten) nuts to 11–12 N–m (100–110 in–lbs).
12 Repeat steps 11a through 11e for the remaining power cables.
13 Position the lug cover over the base and lock the cover (it will snap) onto the enclosure base.
14 Slide each grommet down the cable and over the cable entry hole.
15 Repeat step 5 through step 14 for the Power Cabinet connections.
16 Verify that DC polarity between the RF and Power Cabinet is correct.

AC Power Cabling

Step
1 Verify that the breaker box (at the power meter) is OFF.
2 Open the lower rear I/O door on the Power Cabinet, and remove the AC Load Center access panel
(loosen the screws in the panel to open).
Apr 2001
SC
TM
V0C.03
Table C-6: DC Power Cabling Installation Procedure
The Power Cabinet is rated at 130 Amps (90 Amps continuous/130
non–continuous in the range of 208–240 VAC). Maximum cable size
that can be accommodated is 300 kcmil. Cable sizing should be
determined by Local Electric Codes, using 90 Deg C rated conductors,
and derating for 50 Deg C operation. Motorola recommends not less
than #2/0 AWG (#1 BSWG; 50 mm
to the power pedestal, with an associated power pedestal breaker size of
150 Amps for a single Power Cabinet.
For more details about the AC rating of the cabinet, see Chapter 5 of the
manual.
Table C-7 describes the AC Power Cabling installation procedures.
Table C-7: AC Power Cabling Procedures
4812ET RF and Power Cabinet Hardware Installation Manual
Action
2
) copper for buried/raceway cables
CAUTION
– Dangerous voltages are present that can cause serious
injury or death. AC power wiring must be installed by
qualified personnel only.
– High Leakage current. Earth ground connection is
essential before connecting the power supply. Ground
connection is also required before connecting any
incoming telecom lines to ensure protection from
surges.
Action
DRAFT
Installation Quickstart
– continued
C
143