CHAPTER 2 ND-71548 (E)
Page 28
Issue 2
INSTALLATION DESIGN
Figure 2-14 DC Main Power Cable and Main Ground Cable (3- or 4-PIM System) (Single IMG Configuration)
BATTERY
AC POWER
DISTRIBUTION
BOARD
VCT CABLE
BATTERY
CABLES RECTIFIER
POWER AND
GROUND CABLES
CV or IV
PBX
(For 3/4 PIM Configuration)
Earth Bar
AC SERVICE
OUTLET
-48V
A
G
FE
MAT
MDF
GROUND
TERMINAL
GIV (G)
(ex. 6 AWG)
FE
E
-48V
G
IV (BL)
IV (R)
-48V
G
BAB
Note 1: If the cover of CV Cable to be used is black, use the following clamp cover terminals so they can be
easily identified.
-48V: Black cover
G: Red cover
E: Green cover
Note 2: Extension jointing is usually performed with a T-type terminal for wires of the same size. Refer to Tables
2-8 through 2-10.
Note 3: It is recommended that each -48V lead of A and B be connected to a separate circuit breaker at the rec-
tifier.
CABLE SPECIFICATION
DC Main Power Cable Main Cable Calculate the sectional area of cable referring to
Figure 2-16.
Branch Cable IV cable: more than 14 mm2 (6 AWG)
Main Ground Cable More than 14 mm2 (6 AWG)
IV (G) (ex. 14 AWG)
IV (BL) IV (R)