Polycom SpectraLink RCO400 - Manual (Page 26)

SpectraLink 6300 MCU: Facility Preparation
PN: 1725-36122-001_N.doc 26
Prepare Power for Shelves
The SpectraLink 6300 MCU requires a -48V DC power source. The -
48V connection is comprised of three wires: -48, +48 (neutral), and
ground.
Polycom recommends that a licensed electrician install the -48V
power source. It must be installed according to current National
Electrical Code (NEC) or National Fire Protection Code standards, in
accordance with all local and municipal electrical code
recommendations.
Use of 14 AWG wire is recommended.
See Chapter 4, section Connect Power to Shelves for more information
on power connections.
When connecting the -48 V DC system to power, note the following
precautions:
A 30 amp circuit breaker must be present on the non-grounded DC
circuit conductor, and the installer must ensure that means are
provided for connection of the equipment to the DC source by
permanent wiring methods, and no disconnecting device is located
in the grounded DC circuit conductor between the point of
connection to the supply and the point of connection to the
grounding electrode and equipment grounding conductors.
Run Cables to Base Station Locations
The Base Station locations should be designated on the building floor
plans provided to the field service engineer. Base Stations can be
mounted easily on raised or acoustical ceiling tiles, or on the wall.
Avoid locating Base Stations in high or hard-to-reach places, as this
will hinder maintenance, testing, or repositioning.
Wire specifications
The customer’s wire contractor is responsible for adhering to all
local codes for wiring.