Table of Contents

Site Power Requirements and Heat Dissipation
System Ground Connection Guidelines

Connecting System Ground

AC Power Connection Guidelines
Site-Planning Checklist

Site Planning

Warning Before you install, operate, or service the system, read the Site Preparation and Safety Guide. This guide contains important safety information you should know before working with the system.

This chapter describes how to prepare your site for the installation of the switch and contains these sections:

• Site Power Requirements and Heat Dissipation

• System Ground Connection Guidelines

• AC Power Connection Guidelines

• Site-Planning Checklist

Note A site-planning checklist is provided in the "Site-Planning Checklist" section to help ensure that you complete all site planning activities before you install the switch.

Site Power Requirements and Heat Dissipation

Note Catalyst 4003 switches have two slots for removable AC-input power supplies. Catalyst 4006 switches have three slots for removable AC-input power supplies. Each power supply requires a separate power circuit.

This section provides site power requirements and heat dissipation specifications for the Catalyst 4003 and 4006 switches. You should verify site power before you install the switch.

Note Refer to the Site Preparation and Safety Guide for site power requirements, preinstallation requirements, and EMI recommendations.

Knowing the power requirements is useful for planning the power distribution system necessary to support the switches. The heat dissipation specifications are an important consideration when estimating the air-conditioning requirements for an installation. Table 2-1 provides the power requirement and heat dissipation specifications for the Catalyst 4003 and 4006 switches, supervisor engines, and switching modules.

Table 2-1: Power Requirements and Heat Dissipation Specifications

Model Number/ Module Type	AC-Input Power (Watts)	DC-Output Power (Watts)	Heat Dis-sipation (BTU/HR)	Input Current at 90 VAC (Amps)	Input Current at 120 VAC (Amps)	Input Current at 180 VAC (Amps)	Input Current at 240 VAC (Amps)
Catalyst 4003 chassis (with fans)	12	9	41	0.13	0.10	0.07	0.05
Catalyst 4006 chassis (with fans)	38	28	130	0.41	0.32	0.22	0.16
Catalyst 4003 supervisor engine (WS-X4012)	59	46	201	0.65	0.49	0.33	0.25
Catalyst 4006 supervisor engine (WS-X4013)	130	101	443	1.43	1.08	0.73	0.55
WS-X4306-GB	19	15	65	0.21	0.16	0.11	0.11
WS-X4232-GB-RJ	55	43	188	0.61	0.46	0.31	0.23
WS-X4232-RJ-XX	109	85	371	1.20	0.90	.61	0.46
WS-X4418-GB	65	51	223	0.72	0.54	0.36	0.27
WS-X4148-RJ	69	54	236	0.76	0.57	0.38	0.29
WS-X4148-RJ21	69	54	236	0.76	0.57	0.38	0.29
WS-X4412-2GB-T	120	94	408	1.30	1.00	0.67	0.51
WS-X4232-L3	120	94	408	1.30	1.00	0.67	0.51
WS-X4124-FX-MT	82	105	358	1.16	0.87	0.59	0.44

System Ground Connection Guidelines

Two system (earth) grounding holes are provided in an enclosure near the power supplies. See Figure 2-1 for the location of the grounding holes on the Catalyst 4003 switch and Figure 2-2 for the location on the Catalyst 4006 switch.

• Grounding lug---The grounding lug must have two M4 screw holes. See Figure 2-1 for the location of the M4 screw holes on the Catalyst 4003 switch and Figure 2-2 for the Catalyst 4006 switch.

The grounding lugs are not available from Cisco Systems; any electrical-connector vendor can provide this lug.

• Two M4 (metric) hex-head screws with locking washers---These screws are not available from Cisco Systems; they are available from any commercial hardware vendor.

• One grounding wire (6 AWG recommended)---The length of the grounding wires depends on the location of your switch within the site and its proximity to proper grounding facilities. The grounding wire is not available from Cisco Systems; it is available from any commercial cable vendor.

• Number 2 Phillips head screwdriver.

• Crimping tool---This tool must be large enough to accommodate the girth of the grounding lug when you crimp the grounding cable into the lug.

• Wire-stripping tool.

Connecting System Ground

This section describes how to connect the Catalyst 4003 and 4006 switches to earth ground. It is strongly recommended that you complete this procedure before connecting system power or turning on your switch.

To attach the grounding lug and cable to the grounding receptacle on the Catalyst 4003 and 4006 switches, perform the following steps:

Step 2 Insert the stripped end of the grounding wire into the open end of the grounding lug.

Step 3 Use the crimping tool to secure the grounding wire in place in the grounding lug.

Step 4 Locate the grounding receptacle on the switch.

See Figure 2-3 for the location of the grounding receptacle on the Catalyst 4003 switch and Figure 2-4 for the Catalyst 4006 switch.

AC Power Connection Guidelines

This section provides the guidelines for connecting Catalyst 4003 and 4006 switch AC power supplies to the site power source.

For power connection guidelines for DC-powered systems, see the "Connecting System Ground" section.

For a list of the nominal and acceptable voltage ranges for source AC power, see "Specifications."

Figure 2-5 shows the different styles of AC-input power plugs that are available for North America and various international locales.

Table 2-2 lists the AC-input power cord options and Cisco product numbers. Make sure you have the correct power cord for your site.

Site-Planning Checklist

Table 2-3 lists the site-planning activities that you should perform before you install the Catalyst 4003 switch or the Catalyst 4006 switch. To ensure a successful switch installation, complete each activity.

Table 2-3: Site-Planning Checklist

Task No.	Planning Activity	Verified By	Time	Date
1	Space evaluation: Space and layout Floor covering Impact and vibration Lighting Maintenance access
2	Environmental evaluation: Ambient temperature Humidity Altitude Atmospheric contamination Airflow
3	Power evaluation: Input power type Receptacle proximity to the equipment Dedicated (separate) circuits for redundant power supplies UPS for power failures
4	Grounding evaluation: Circuit breaker size
5	Cable and interface equipment evaluation: Cable type Connector type Cable distance limitations Interface equipment (transceivers)
6	EMI evaluation: Distance limitations for signaling Site wiring RFI levels

Posted: Mon Jun 12 17:32:37 PDT 2000
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