Installing a DC Power Supply
An exposed wire lead from a DC-input power source can conduct harmful levels of electricity. Be sure that
no exposed portion of the DC-input power source wire extends from the terminal block plug. Statement 122
Warning
Before performing any of the following procedures, ensure that power is removed from the DC circuit.
Statement 1003
Warning
This product relies on the building's installation for short-circuit (overcurrent) protection. Ensure that the
protective device is rated not greater than: 20 A. Statement 1005
Warning
A readily accessible two-poled disconnect device must be incorporated in the fixed wiring. Statement 1022
Warning
Hazardous voltage or energy may be present on power terminals. Always replace cover when terminals are
not in service. Be sure uninsulated conductors are not accessible when cover is in place. Statement 1086
Warning
The grounding architecture of this product is DC-isolated (DC-I).
Note
Equipment That You Need
• Ratcheting torque screwdriver with a number-2 Phillips head that exerts up to 15 pound-force inches
(lbf-in.) of pressure.
• Panduit crimping tool with optional controlled-cycle mechanism (model CT-720, CT-920, CT-920CH,
CT-930, or CT-940CH).
• Wire-stripping tools.
• 12-gauge copper ground wire (insulated or not) for the single-hole ground connection.
• 8-gauge copper ground wire (insulated or not) for the dual-hole ground connection.
• Dual-hole ground lug and two screws (included in the DC power supply accessory kit) and single-hole
ground lug and screw (included in the switch accessory kit). The dual-hole lug is required for the grounding
of the switch in NEBS installations where the DC supply is the only NEBS compliant power supply
option.
• Four leads of 14-gauge copper wire.
Cisco Catalyst 9300 Series Switches Hardware Installation Guide
89
Installing a Power Supply
Installing a DC Power Supply
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