Polycom RMX DOC2579D Getting Started Manual page 46

Chapter 2-First Time Installation and Configuration
2-16
3
Remove the transparent plastic caps on the terminal block.
4 Using the two wires of an 10 AWG cable running from the DC power
distribution unit, connect the black wire into the -48VDC terminal
block and the red wire to the RTN terminal block.
•
A 10 AWG cable must be used to connect the mains with the RMX 4000 DC
Power Rail Model.
•
The supply wires for DC version must be terminated using quick connectors.
•
Extension cords may not be used.
ESD connector
Ground connector
Circuit breaker - ON
position
RTN
The center PRM slot/module is fitted with a blank panel and the slot cannot be
used on a system with DC Voltage.
5
Connect the green or green-yellow wire to the system single-point
M6x15 "Ground" bolt.
The rating of the protective earthing conductor should be a minimum of 10AWG.
Blank panel
-48 VDC
Circuit breaker - OFF
position