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Use only copper conductors for all wiring applications. All equipment must be installed in
accordance with the manufacturer’s recommendations and the specifications and standards of the
authority having jurisdiction (AHJ). The installation of all wiring, cable, and equipment must be
in accordance with NFPA 70 and the National Electrical Code (NEC), specifically Article 760
(Fire Alarm Systems), Article 800 (Communications Circuits).
If applicable, the installation must be in accordance with the Canadian Building Code, and any
provincial and/or local requirements.
Each TrueAlert channel is limited to 0.60uF maximum capacitance. This includes conductor to
conductor and conductor to shield capacitance (if shield wire is used).
TPS wiring must use ferrite beads in order to comply with the RF Immunity test specified in
UL864
If shielded wire is used, the following must be observed.
Metallic continuity of the shield must be maintained and insulated throughout the entire
length of the cable.
The entire length of the cable must have a resistance greater than 1 Mega ohm to Earth.
Underground wiring must be free of all water.
Wiring other than that connected to elevator cabs must not be run in elevator shafts
(reference NFPA 70, Article 620).
Wiring in ducts, plenums, and other air handling spaces must be installed in accordance with
NFPA 70, Article 300.
Splicing is permitted in accordance with NFPA 70. All junctions must be insulated as soundly as
the original jacket. Continuity of shields (where used) must be maintained.
A system ground must be provided for Earth detection and lightning protection devices. This
connection shall be made to an approved, dedicated Earth connection, per NFPA 70, Article 250.
Only system wiring can be run in the same conduit.
Field wiring circuits shall not leave the building of origin unless all of the following conditions are
met.
Circuits are protected from lightning by utilization of either the Model 2081-9044 or the
Model 2081-9028 listed isolated loop circuit protectors.
One isolated loop circuit protector is inserted into the circuit where the wiring leaves the
building. A second isolated loop circuit protector is inserted into the circuit where the wiring
enters the next building.
Underground wiring circuits are run in a parallel wiring trough separate from any commercial
power distribution wiring.
Overhead circuit wiring is run in parallel with relation to the commercial power distribution
wiring. Overhead circuit wiring is separated from the commercial power distribution wiring
by a minimum distance equal to the maximum span between two adjacent poles of either the
system’s circuit or the commercial power distribution circuit, or 100 feet (30 m), whichever is
greater. Outside plant wiring is limited to one contiguous property and the total wire length
may not exceed 3,270 feet (997 m).
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General Wiring Guidelines
General Wiring
Guidelines
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