Installation guide

ADC Telecommunications, Inc.
110 C
HAPTER 5: CABLING THE SYSTEM
Connecting Power to the Chassis
Your system supports connection to redundant power sources. Use 10 gauge
electrical wire to connect the power sources to the chassis. Use the
procedure below to connect the power sources to the system:
WARNING: Before cabling system power, you must review, understand, and
follow these guidelines and precautions:
■ Before you connect the power sources to the system, be sure that the
circuit to which you are connecting the system is off so that all power is
removed from the circuit and the wires that you are connecting.
■ Before proceeding with connecting the power, ensure that both power
switches on the chassis are in the off position.
■ Take care not to overload the power supply circuit to which you are
connecting the system.
■ Before proceeding with connecting the power lines to the system,
remove all jewelry such as rings, watches, and necklaces.
■ Do not work alone whenever potentially hazardous conditions exist.
■ Before beginning the power cabling procedure, locate the emergency
power-off switch for the location in which you are working.
■ Before proceeding with connecting the power lines to the system, check
your work area for possible hazards such as ungrounded power extension
cables and moist floors.
You need a 7/16” wrench or socket and a No. 1 phillips screwdriver to
connect power to the chassis.
It is very important not to overtighten the nut to the grounding stud. Use a
torque specification of 25 - 30 in-lb when tightening the nut to the
grounding stud.
1. If you haven’t already done so, review “Electrical Safety Guidelines and
Precautions” on page 59.
2. Earth ground the chassis by connecting the ground wire to the two
grounding terminals located on the back of the chassis using the
anti-rotational lug, as shown in Figure 5-11.