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Catalyst 2955 Hardware Installation Guide
78-14944-03
Chapter 3 Installation
Connecting the Switch to the Power Converter
Step 1 Measure a single length of green, stranded copper wire long enough to connect
the power converter to the earth ground.
Note For connections from the power converter to earth ground, use shielded
12 AWG stranded copper wire, such as Belden part number 9912 or the
equivalent.
Step 2 Measure a length of twisted-pair copper wire long enough to connect the power
converter to the DC power source.
Note For DC connections from the power converter to the DC source, use 12
AWG twisted-pair copper wire, such as Belden part number 9344 or the
equivalent.
Step 3 Using a 12-gauge wire-stripping tool, strip the ground wire and both ends of the
twisted pair wires 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 wires. Stripping more than the
recommended amount of wire can leave exposed wire from the power and relay
connector after installation. (See Figure 3-2.)
Step 4 Connect one end of the green, stranded copper wire to a grounded bare metal
surface, such as a ground bus, a grounded DIN rail, or a grounded bare rack.
Step 5 Insert the other end of the exposed ground wire lead into the Earth ground wire
connection on the power converter terminal block. Only wire with insulation
should extend from the connection. (See Figure 3-20.)
Step 6 Tighten the earth ground wire connection terminal block screw.
