User's Manual

3-10

Cisco Catalyst 4900M S witch Inst allati on Guide

78-18350- 0 2

Chapter 3 Installing the Swi tch

Connecting DC-Input Power to the Catalys t 4900M Switch

Step 3 Remove the terminal block cover by simultaneously squeezing the top and bottom sides of the cover, and

at the same time, use a fingernail to carefully pry up on the top and bottom clips on the terminal block

cover to release the cover from the terminal block. Pull the cover off of the terminal block and set the

cover aside. (See Figure 3-6.)

Figure 3-6 Removing the Terminal Block Cover

Step 4 Using a 5/16-inch nutdriver, loosen and remove the four nut and lockwasher pairs on the terminal block

posts. Set the nuts and lockwashers aside.

Step 5 Using an M4 nutdriver, loosen and remove the nut and loc kwasher from the power sup ply ground

terminal.

Step 6 Attach appropriate type and sized lugs t o the source DC cables.

Note The lugs are not supplied as part of the chassis accessory kit; you need to purchase them

separately. See Figure 3-7 for the phys ical d imensions of a s uitabl y-sized D C power cable lug.

The lugs must have:

• Two holes with 0.62 ±0.02-inch spacing between the hole centers to accommodate the power supply

terminal posts.

• A 90-degree bend in the barrel to allow the source DC cables to exit the terminal block.

• Suitable DC power cable lugs inc lude:

–

For 4 AWG-sized cable—Panduit LCD4-14A F-L or Burndy YA4C-2L-90

–

For 6 AWG-sized cable—Panduit LCD6-14A F-L

1 Terminal block cover 3 Terminal block cover clip

2 Terminal block

208194