GAI-Tronics Associated with 600-ohm systems Extended Range Page/Party System Manual - Manual (Page 4)

Pub. 42004-324A
Extended Range Page/Party
®
Systems Page: 4 of 10
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STEP 4 - Installation of Inter-station Conduit and Cable
Inter-station cables are generally installed in cable trays or conduit. To assist in determining the conduit
sizes required, the outside diameters of the GAI-Tronics Corporation cables discussed in this publication
are listed below. Size and installation of conduit and cable must meet the requirements of applicable
electrical codes.
Cable Conductors O.D.
60038-101 8 0.60 in. (15.1 mm)
60029-101 16 0.68 in. (17.2 mm)
A ground conductor with green/yellow insulation, should be included with cable in any area where no
conduit, or non-metallic conduit is used. Non-metallic enclosures used with metallic conduit and cable
without a ground conductor require a bond between the conduit(s) and the ground terminal (terminal 3)
within the enclosure.
When using GAI-Tronics cable, attach wire lugs to each conductor and connect to the appropriate terminal
in accordance with either the color code shown on the applicable accompanying diagram or with special
drawings provided for this purpose.
Exception: Some cables have a spare orange conductor. Unless otherwise instructed, this should be
taped and not connected to the terminal strip(s) in the enclosures.
GAI-Tronics cable is considered to be a Class 1 cable (maximum voltage is less than 600 V). In a cable
tray, Class 1 cable may only be grouped with other Class 1 cables. However, long runs of GAI-Tronics
cable in proximity of 600 volt cables may cause an undesirable amount of hum to be induced onto the
Page/Party
® system’s audio lines. To reduce undesired hum, separate the Page/Party
®
system cable from
the 600 volt cables by a minimum of 12 inches.
STEP 5 - Installation of Amplifiers and Subsets
One of the many features of GAI-Tronics Page/Party
®
system equipment is automatic speaker muting.
When the Push-to-Page switch is pressed at a particular station, the paging speaker connected to that
station is silenced, preventing acoustic feedback to the handset microphone. However, while the handset is
in use for the party line conversations, the paging speaker is “live” to permit broadcasts of page calls from
other stations.
For cases where the muting feature is not necessary or may be a disadvantage, it can be defeated as
outlined below.
1. Locate the lugged violet wire attached to terminal point 7 (M UTE ) on the terminal block within the
enclosure of station to be modified.
2. Move the lugged violet wire to terminal point 8 (P AGE L1).
After making any necessary muting changes, unpack and install the amplifier for each station. Also,
unpack remote subsets (for desktop, desk-edge or flush-panel mount stations) and plug each into the bottom
of their respective amplifier enclosure.