Polycom SpectraLink 6300 MCU - Manual (Page 23)

Site Preparation
1725-36121-001_J.doc 23
SpectraLink 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.
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.
SpectraLink recommends UL-listed wire that conforms to the
following specifications for AWG, distance, and number of power
pairs required for this installation.
Power
Pairs
Max Cable Feet
22 AWG
Max Cable Feet
24 AWG
Max Cable Feet
26 AWG
1 6,000 3,800 2,400
2 N/A 6,000 4,800
3 N/A N/A 6,000