Safety Messages For Wiring; Preparing To Wire The Ex D Flameproof Models - Federal Signal Global Serie Consignes D'installation Et De Maintenance

Installation and Maintenance Instructions

Safety Messages for Wiring

When installing and operating flame-proof electrical equipment, the relevant
national regulations for installation and operation (e.g., EN60079-14, IEC Wiring
Regulations and NEC/CEC) must be observed.
• Do not connect this loudspeaker to the system when power/audio system is
on.
• To maintain the flame-proof integrity of the enclosure, DO NOT damage the
cover or threads while disassembling or reassembling the unit.
• Painting and surface finishes, other than those applied by Federal Signal
Corporation, are not
• Cable termination should be in accordance with specifications applying to the
application. Federal Signal recommends that all cables and cores should be
fully identified.
• Ensure that only the correct equipment-certified glands are used and that
the assembly is shrouded and correctly earthed. Gland entries are M20-1.5
6H with an option for the M25 entry on the end of the increased safety box
models. See Table 4 on page 20 for choosing correct cable entry devices
for Equipment in Potentially Explosive Atmospheres.
• Because of space limitations, ensure the cable cores within the unit are not
too slack.
• In all countries, the wiring must comply with all national and local codes and
standards.
• Ensure that all nuts, bolts, and fixings are secure.

Preparing to Wire the Ex d Flameproof Models

SHOCK HAZARD: To avoid electrical shock hazards, do not connect wires
when power is applied. Failure to observe this warning may lead to serious
injury or death.
Ex d units are supplied with a ten position PCB mounted screw terminal block.
This section has wiring instructions for the flameproof models G-SPK 70 V and
100 V.
The maximum wire gauge is 4.0 mm
or 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 for these models 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 x 6H.
12
permitted.
Model G-SPK Global Series Loudspeaker
(12 AWG). The wire must be rated 85 °C
2