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Chapter 3
Connect the Power Supply Units
Connect the DC-Input Power Supply Unit
Figure 3-3
Connecting the DC Power
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Before completing any of the following steps, and to prevent short-circuit or shock hazards, ensure that
power is removed from the DC circuit. To ensure that all power to the power supply unit is OFF, locate
the circuit breaker on the panel board that services the DC circuit, switch the circuit breaker to the OFF
position, and tape the switch handle of the circuit breaker in the OFF position.
Wiring should be done by a professional in accordance with state and local electrical codes.
Step 1
Ensure that the DC power line input leads are disconnected from the power source.
Step 2
Using the number 2 Phillips screwdriver, remove the protective plate from the terminal block.
Step 3
Insert one receptacle screw into the hex or loop connector on one power line input, insert the screw with
the connector into the corresponding lead receptacle and tighten the receptacle screw using the number
2 Phillips. Repeat for the remaining power line input lead.
Note
The color coding of the DC-input power supply leads depends on the color coding of the DC power
source at your site. Make certain the lead color coding you choose for the DC-input power supply
matches lead color coding used at the DC power source.
Note
Use 12 AWG (2.5 mm) copper wire only with hex or loop connectors. Ring terminals must be UL
approved and suitable for 12 AWG wire.
Step 4
Using the number 2 Phillips screwdriver, securely fasten the protective plate to the terminal block.
Step 5
Connect the DC power line input leads to the DC power source through a fast 10A circuit breaker.
Step 6
Turn the on/off switch to the on position.
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Cisco Service Control Engine 1000 2xGBE Quick Start Guide
Connecting the Power
3-3
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