Reference
R - 1
Form 361015-0001A
FiberPoint Structured Wiring Enclosure Installation Guide
Reference
Reference
FiberPoint Structured Wiring Enclosure Installation Guide
Form 361015-0001A
O
VERVIEW
This appendix includes valuable reference information to
assist you in installing any FiberPath 500 System. Included
herein:
•
Grounding the CPE
•
FiberPath 500 System Specifications
•
FiberPath 500 PON Specifications
•
Laser/EDFA Component Specifications
•
FiberPoint 500 Series Specifications
•
FiberPoint Power/Mechanical Specifications
•
Optical Link Budget
•
Optical Link Budget Calculator
•
GPON Calculator Instructions
•
PON Design Guidelines
•
Using the Calculator
•
EDFA VPON Distribution Diagram
•
Cascaded EDFA VPON Distribution
•
CATV CNR vs. Channel Loading
G
ROUNDING
THE
CPE
This section provides information for installing a proper
ground for Optical Solutions’ Customer Premises
Equipment (CPE), which includes various models of the
FiberPoint. This document also provides NEC
requirements for installing a ground.
Grounding Options
The grounding requirements for various FiberPoint models
differ depending on where the unit is installed. Exterior
mounted FiberPoints require a direct bond to the buildings
primary earth electrode. (See below). For internally
mounted FiberPoints, or Fiberpoints which do not
incorporate the Optical Solutions enclosure, It is allowable
to connect to the buildings electrical ground circuit.
1118
IMPORTANT
IMPORTANT: It is absolutely critical that the
FiberPoint Electronics Module, when
mounted, be connected to a known
good ground. Failure to properly ground
the unit during installation will cause
loss of services.
External Mount Grounding Requirements
When the Main Electronics Module is mounted outside the
premises, the National Electrical Code (NEC), the Rural
Electric Association (REA) and state/local codes require
that the FiberPoint Electronics Module be properly
grounded. In this application, a proper ground is one that
bonds the module to the buildings primary earth electrode.
Extreme care must be taken when attaching the ground
connectors to the utility (earth) ground rod. If the ground is
interrupted or disturbed in any way, an unsafe condition will
exist.
Internal Mount Grounding Requirements
The primary method of grounding in this application will be
to bond the mounting bracket to the homes electrical
ground circuit. It is at this point that the power utility is also
bonded. The bonding conductor used must be a # 14 AWG
copper or equivalent.
NEC and Grounding
A very important aspect of CPE installation is to comply
with the National Electric Code (NEC), as well as all state
and local codes. Article 800 of the NEC requires the CPE
to be grounded according to Article 250.56 of the code. To
be properly grounded, the CPE must be directly bonded to
the building’s AC utilities earth ground electrode using a #6
AWG copper conductor. The earth electrode can be a
metallic cold water pipe or a copper clad steel rod that has
been driven into the ground to a depth of at least 8 feet.
Metallic cold water pipes that run under ground for a
distance of at least 10 feet are considered the best ground
electrodes. The NEC requires that if cold water pipes are
used they must be within 5 feet of the outside wall that the
CPE has been mounted on.
In the event that the CPE is installed more than 20 feet
from the building AC utility earth ground electrode, a
suitable secondary ground electrode must be provided.
The secondary ground must be bonded to the building’s
primary earth electrode. A bonding jumper of #6 AWG
copper must be used between the two electrodes.
Grounding Purpose
Providing proper grounding to the CPE has two different
perspectives. First of all grounding provides for the safety
of the intended user and maintenance personnel. The
grounding requirements of the NEC do provide a degree of
safety in the event that the outer metallic case of the
protected device should become energized by a current
carrying conductor. In this event, the grounded case would
cause the over current device to trip thereby removing the
power to the device.
The second aspect of proper grounding is for the protection
and survivability of the electronics equipment. High voltage