Wiring The Ex De Models - Federal Signal Global Serie Manual Del Usuario

Ex de units are supplied with a six pole spring tension clamp style terminal block.
The maximum wire gauge is 4.0 mm
higher. Use only stranded cable to terminate the loudspeaker. The cross-sectional
area of the primary earth (ground) must equal the cross-sectional area of the
phase conductor.
Cable termination should be in accordance with specifications applying to
the application. It is recommended that all cables and cores should be fully
identified. Use the appropriate cable gland for the application. Gland entry
threads are M20-1.5 6H.
Conductive metalwork, including cable glands, must be a minimum of 5 mm
away from the terminals.
Leads connected to the terminals shall be insulated for the appropriate voltage
and this insulation shall extend to within 1 mm of the metal of the terminal
throat.
The G-SPK terminal block is supplied with two conductors per pole. The
terminal block allows for easy supply-in and loop-out wiring to connect the
loudspeakers in series.
Tools needed:
• 3.0 mm A/F hexagon key
• No. 1 Phillips screwdriver
• Wire stripper

Wiring the Ex de Models

To wire the Ex de models:
1.
Unscrew the four M4 socket-head cap screws and remove the terminal
box cover.
2.
Strip the wire insulation 8 mm to 9 mm (0.33 in).
NOTE: When using more than one single or multiple strand lead, the
connection into either side of any terminal must be joined in a suitable
manner, e.g. two conductors into a single insulated crimped bootlace
ferrule.
3. The loudspeaker is factory-wired as 15 W. To change the wattage
tap setting it is necessary to modify the factory wiring on the printed
circuit board located inside the main housing. Refer to "Wiring the Ex d
Models" on page 14 for information on changing the tap settings. The
line bushing is wired as follows: (1) Audio +, (2) Audio -, (3) Earth.
4. To connect wires, depress the push button on the terminal block with a
Phillips screwdriver and insert the wire into the round opening. Release
push button to make connection.
Model G-SPK Global Series Loudspeaker
Installation and Maintenance Instructions
(12 AWG). The wire must be rated 85 °C or
2
15