AT&T System 75 Wiring Diagram page 110

Equipment Room Hardware And Cabling Installation
HORIZONTAL
LINE
7-11/16 INCHES
47-1/2 INCHES
7-11/16 INCHES
Figure 3-15. Mounting 900-Pair 110P-Type Terminal Blocks
(Approximately 432 4-Pair or 576 3-Pair Station
Capacity Illustrated)
of the previous screw. Partially install the second mounting screw
5-5/16 inches to the right of the screw just installed. Repeat Steps
3, 4, and 5.
7 .
If another trunk/auxiliary field terminal block is to be installed,
partially install the first screw for the terminal block, on the line, 7/8
inch to the right of the previous screw. Partially install the second
49 INCHES
5-5/16 INCHES
7/8 INCH
FLOOR LINE
AC POWER
STRIP
96 INCHES
HORIZONTAL
LINE
23 INCHES
3-27