Section 3 Page 2

Section 3 - Before You Begin Installing


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Wiring Specifications

Induced noise (transfer of electrical energy from on wire to another) can interfere with telephone communication or cause false alarms. To avoid induced noise, follow these guidelines:

Isolate input wiring from high current and power wiring. Do not pull one multi-conductor cable for the entire panel. Intead, separate the wiring as follows:

1/4" spacing must be maintained between each of these circuit types; as well as between power limited and non-power limited circuits.	Input/Output Type	Wiring
	High current:	AC power, speaker, and notification devices
	Low current:	Annunciator and zone circuit wiring
	Audio:	Telephone wiring

DO NOT pull wires from different groups through the same conduit. If you must run them together, do so for as short a distance as possible or use shielded cable. Connect the shield to earth ground at the panel only. You must route high and low voltages separately.
Route the wiring around the inside perimeter of the cabinet. It should not cross the circuit board where it could induce noise into the sensitive microelectronics or pick up unwanted RF noise from the high speed circuits. See the figure below for an example.
High frequency noise, such as that produced by the inductive reactance of a speaker or bell, can also be reduced by running the wire throught ferrite shield beads or by wrapping it around a ferrite toroid.


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