User's Manual

Site Preparation – continued
Apr 2001
45
SC
TM
4812ET RF and Power Cabinet Hardware Installation Manual
DRAFT
The Power Cabinet is rated at 130 Amps (100 Amps
continuous / 130 Amps non–continuous, in the range of
208–240V AC, see Table 5-32 for details). Maximum
cable size that can be accommodated is 300 kc mil.
Cabling sizing should be determined by Local Electrical
Codes, using 90Deg C rated conductors, and derated for
50 Deg C operation. Motorola recommends not less than
#2/0 AWG (#1 BSWG; 50 mm
2
) copper for
buried/raceway cables to the power pedestal, with an
associated power pedestal breaker size of 150 Amps for
one Power Cabinet.
IMPORTANT
*
The AC power pedestal or meter should be provided with a breaker to
protect the cable from the pedestal to the Power Cabinet. The Power
Cabinet rating is 130Amp. A 150–amp breaker is recommended, or as
appropriate for local electrical code.
The knockout in the I/O plate of the Power Cabinet is the
proper size for a 2” Trade size conduit fitting.
NOTE
Ground Wire Connection (RF and Power Cabinet) – #3 B.S.W.G (#2
AWG; 35 mm
2
) solid–tinned copper wire or equivalent is recommended
RF Cabinet Alarm Cable Connection
– Sixteen (16) twisted pair cable
– 25.4 mm (1”) conduit (maximum)
RF Cabinet Span and Modem Cable Connection
– Thirteen (13) twisted pair cable
– 25.4 mm (1”) conduit (maximum)
Main RF Cable – 50 Ohm Coaxial, male N–type connector on one end,
customer specific on other end.
RGPS Cable (if applicable) – See Table 5-1 for cable specifications
RF GPS Cable (if applicable) – See Table 5-1 for cable specifications
LFR Cable (if applicable) – See Table 5-1 for cable specifications
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