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ENGINEER GUIDE SPECIFICATION: _ � <br /> Furnish and install Simplex type 2081-9028 Isolated The ILCP shall have a line-to-line response time of less <br /> Loop Circuit Protecto"rs. The ILCP shall be installed on than one (1) nanosecond capable of accepting greater �— <br /> all,fire alarm [data communication circuits], [signalling than 2000 amps at 28 volts. Line-to-earth response <br /> line circuit], [audio riser], [telephone riser] [SCU/RCU], time shall be less than 1 nanosecond with a maximum � <br /> (Mapnet-II`""] wiring, (including shields), which extends current of 2000 amps (35 joules each line) to earth. <br /> beyond the main building by either aerial, underground Shield-to-earth current shall be 5000 amps maximum. <br /> or other methods [wal4iways, bridges or other above <br /> ground connectors]. The ILCP shall be protected by a high dielectric insulat- <br /> ing material and be of small enough size to mount in a <br /> The ILCP shall be located as close as practicable to standard 4 11/16"square 2Ye"deep electrical box. <br /> the point at which the circuits leave or enter a building. <br /> Spark gap devices or devices incorporated in or installed , <br /> The ILCP grounding conductor shall be a No. 12 AWG within the fire alarm control panel in lieu of the specified <br /> wire having a maximum length of 28 feet to be run in protector are not acceptable. <br /> as straight a line as practicable and connected to the <br /> building grounding electrode system (unified earth <br /> ground) per Article 800-31 of the (1987) National Elec- <br /> trical Code. - <br /> TYPICAL CONNECTIONS: <br /> 4 11/16"SQUARE BOX,2Ye" <br /> DEEP(MIN.) <br /> BUILDING LINE I (NOT FURNISHED ± <br /> � BY SIMPLEX) , <br /> IYEL VIO <br /> i <br /> A �� 2081-9028 <br /> PROTECTOR R A <br /> TO EXTERNAL , TO <br /> WIRING & — PROTECTED <br /> DEVICES A �' B EQUIPMENT <br /> �' LINE EQUIP. <br /> � GRN <br /> I __ GRY BRN <br /> ORN GRY <br /> GRND.SCREW � (�2 AWG.MIN.) <br /> � !�(28 FT.MAX.) <br /> II <br /> � NOTE: FOR APPLICABLE FIELD <br /> � CONNECTIONS REFERENCE SIMPLEX <br /> • - PUBLICATION SPEC-21-104.(574-E05) <br /> GROUNDING ELECTRODE SYSTEM <br /> (UNIFIED EARTH GROUND) <br /> ( <br /> i <br /> Simplex T�rr,�Recorder Co. <br /> �S' � �/ Gardner,Massachusetts 01441-0001 U.S.A. <br /> '� I eA Time,Fire Alarm,Security and Control Systems <br /> Offices and Representatives Throughout the U/orld <br /> Printed in U.S.A. <br />