Cisco Systems 3750-E, RPS 2300 Preparing for Installation, Wiring the DC-Input Power Source, page

Power Supply Module Installation

Installing a DC-Power Supply (Only Catalyst 3750-E and 3560-E Switches)

To connect the switch to a DC-input power source, follow these steps:

1.Preparing for Installation, page 8

2.Grounding the Switch, page 9

3.Installing the DC Power Supply in the Switch, page 10

4.Wiring the DC-Input Power Source, page 11

Warning 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 connecting or disconnecting ground or power wires to the chassis, ensure that power is removed from the DC circuit. To ensure that all power 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. Use a voltmeter to test for 0 (zero) voltage at the power terminals on the chassis. Statement 196

Warning This product relies on the building’s installation for short-circuit (overcurrent) protection. Ensure that the protective device is rated not greater than: 15 A. Statement 1005

Note The grounding architecture of this product is DC-isolated (DC-I).

Preparing for Installation

Obtain these necessary tools and equipment:

•Ratcheting torque screwdriver with a number-2 and a number-1 Phillips head that exerts up to 15 pound-force inches (lbf-in.) or 240 ounce-force inches (ozf-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 noninsulated) when using the single-ground connection.

•6-gauge copper ground wire (insulated or noninsulated) when using the dual-ground connection.

•Ground lug screw and lug ring in the switch accessory kit. For a dual ground connection, also use the dual-ground adaptor and dual-hole lug from the DC power supply accessory kit.

•Four leads of 16-gauge copper wire.

•Four round eyelet terminals or four fork-type terminals from the DC power supply accessory kit.

Installation Notes for Catalyst 3750-E, Catalyst 3560-E Switches and RPS 2300 Power Supply Modules

8 78-17570-01