4. Connect the ground wire.
See Connecting the Ground Wire to a 450 W or 550 W DC Power Supply on page 237.
5. Connect the power supply to the electrical source and energize the DC circuit.
See Connecting a 450 W or 550 W DC Power Supply to the Source Voltage on page 239.
Required Tools and Materials for Installing a 450 W or 550 W DC Power Supply
You need the following tools and materials to install or remove a 450 W or 550 W DC power supply.
• Three spade terminals (Panduit part number PN14-6FN or equivalent) for connecting the ground
and input power cables (provided)
• #14 AWG copper cable for grounding the power supply and connecting the power supply to the DC
power source. (DC power and grounding cables are not included with the power supply.)
Recommended insulation colors are:
◦ Red for the –48 V connection (–)
◦ Black for the –48 V RTN connection (+)
â—¦ Green or green with yellow stripe for the ground connection
• Connection hardware appropriate to the installation site:
â—¦ Hardware for connecting the power wires to the DC source
â—¦ Hardware for connecting the ground wire to the site grounding point
• Stripping tool
• Crimping tool for attaching the lug to the ground wire
• #2 Phillips screwdriver
• Torque screwdriver and wrench or torque driver with attachments for tightening screws and nuts
• ESD-preventive wrist strap
• Thermal protective gloves (required for removal of a power supply)
Spade-type connection lugs for power and ground are shipped with the power supply.
Preparing the Cables for a 450 W or 550 W DC Power Supply
Three spade-type terminals are provided with the power supply.
You need a crimping tool to attach the terminals to the power and ground cables.
To prepare the cable wires, follow these steps:
1. On each cable wire, strip 6 mm (0.25 inch) of insulation from one end.
Installing Your Extreme Networks Switch
Install a 450 W or 550 W Internal DC Power Supply
ExtremeSwitching Hardware Installation Guide 235
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