Cisco Catalyst IE 3 00 Series Installation Manual page 15

Switch Installation
Warning
Before performing any of the following procedures, ensure that power is removed from the DCcircuit.
Statement 1003
Warning A readily accessible two-poled disconnect device must be incorporated in the fixed wiring. Statement
1022
Warning
Warning: Only trained and qualified personnel should be allowed to install, replace, or service
thisequipment. Statement 1030
Warning Warning: Connect the unit only to DC power source that complies with the safety extra-low voltage
(SELV) requirements in IEC60950 based safety standards. Statement 1033
Warning
Installation of the equipment must comply with local and national electrical codes. Statement 1074
Caution
For wire connections to the power and alarm connectors, you must use UL- and CSA-rated, style 1007
or 1569 twisted-pair copper appliance wiring material (AWM) wire.
To wire the switch to a DC power source, follow these steps:
1. Locate the two power connectors on the switch front panel labeled DC-A and DC-B.
2. Identify the connector positive and return DC power connections. The labels for power connectors DC-A
and DC-B are on the switch panel as displayed below.
Label
+
–
3. Measure two strands of twisted-pair copper wire (14 AWG) long enough to connect to the DC power
source.
4. Using a wire-stripping tool, strip each of the two twisted pair wires coming from each DC-input power
source to 0.25 inch (6.3 mm) ± 0.02 inch (0.5 mm). Do not strip more than 0.27 inch (6.8 mm) of insulation
from the wire. Stripping more than the recommended amount of wire can leave exposed wire from the
power connector after installation.
Wiring the DC Power Source
Connection
Positive DC power connection
Return DC power connection
Switch Installation
15