GAI-Tronics 700 Series 120 V AC Page/Party Systems - Manual (Page 4)

Pub. 42004-139D
GAI-Tronics 700 Series 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. (15.1mm)
60029-101 16 0.68 in. (17.2mm)
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 (point 3)
within the enclosure.
When using GAI-Tronics cable, attach wire lugs to each conductor and connect to the 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 an orange “spare” 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. Long runs of GAI-Tronics cable in
proximity to 600-volt cable may cause an undesirable amount of hum being induced onto the Page/Party
®
system’s signaling lines. To reduce undesired hum, it is recommended that runs of cable over ½ mile be
separated from 600-volt cable 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 still “live” to paging 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 lugged violet wire attached to terminal point 7 (Mute) on the terminal block within the
enclosure for station to be modified.
2. Transfer lugged violet wire to terminal point 8 (Page L1).
After making any necessary muting changes, unpack and install the amplifier for each station. Also,
unpack remote subsets (for desktop, desk-edge or panel-mount stations) and plug each into the bottom
sides of the amplifier enclosure.