Polycom RMX DOC2579D - 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.
5 Connect the green or green-yellow wire to the system single-point
M6x15 “Ground” bolt.
• 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
Circuit breaker - ON
position
-48 VDC RTN
Ground connector
Blank panel Circuit breaker - OFF
position
The center PRM slot/module is fitted with a blank panel and the slot cannot be
used on a system with DC Voltage.
The rating of the protective earthing conductor should be a minimum of 10AWG.