System Wiring - Comdial ExecuTech 0616 Series User Manual

Installation

SYSTEM WIRING

System cabling may be routed concealed or visible as
the installation location requires, Good engineering
practices must be observed and all applicable building
codes must be adhered to.
through 2-4 illustrate the system wiring and connection
points for the key system.
AC Power Connection
The AC power is applied to the system by connecting
the AC power cord to the standard (NEMA 515R)
electrical outlet which supplies the dedicated
The following precautions should be taken to help
prevent damage to the system which could be caused
by an electrical over-voltage condition.
Do not connect the ACpower cord until the in-
l
stallation has been checked per the SYSTEM
CHECKOUT instructions given at the end of
this Chapter.
Employ a dedicated lVL!AC 15 AMP circuit,
l
with a third-wire ground, supplied to a stand-
ard (NEMA 5-15R) electrical outlet for the
power connection.
l
Figure 2-1. Mounting
Table 2-l and Figures 2-2
AC
- - - o - -
I
A plug-in, powerline surge protectof should be
l
installed between the KSUpowercordand
AC power eiectrkai outlet.
The KSU interface connections for the
are individual mdular jacks. Wiring between the KSU
connectors and the demarcation point connectors is via
standard modular line cord. The maximum allowed
tip/ring loop resistance is 1900 ohms from the KSU
modular jack to the CO/PBX equipment.
To help Insure that foreign voltages, which could
appear on the CO lines, do not damage the system,
verify that gas discharge tubes orsimiiarprotection
devices are installed, and properly grounded, in all
connected CO lines.
Statlon Connection
Connections between the KSU and the stations are typi-
cally via type 66M-xx connector blocks which are cable
connected to the KSU 50-pin male connectors. The
maximum distance allowed from the KSU to a station is
1500 feet using #I24 gauge, twisted-pair cable.
.
If spare conductors exist in the cables that are run be-
tween the KSU 66M-xx connector block and the station
the