Polycom spectralink jpi300 User Manual

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SpectraLink 6300 MCU: Facility Preparation 
PN: 1725-36122-001_M.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.