Hazardous Areas; Prepare The Electrical Connections - Emerson Rosemount 5408 Reference Manual

Electrical installation
March 2023
4.2

Hazardous areas

When the transmitter is installed in hazardous areas, local regulations, and specifications in
applicable certificates must be observed.
Related information
Product certifications
4.3

Prepare the electrical connections

4.3.1 Cable selection
Use 24-14 AWG wire. Twisted pairs and shielded wiring are recommended for
environments with high EMI (electromagnetic interference).
Use wire rated at least 5 °C above maximum ambient temperature.
Two wires can be safely connected to each terminal screw.
4.3.2 Cable gland/conduit
For explosion-proof/flameproof installations, only use cable glands or conduit entry
devices certified explosion-proof or flameproof.
4.3.3 Power consumption
Max. 1 W, current max. 23 mA
4.3.4 Grounding
Make sure grounding is done according to national and local electrical codes. Failure to do
so may impair the protection provided by the equipment.
Transmitter housing
The most effective grounding method is direct connection to earth ground with minimal
impedance. There are two grounding screw connections provided (see
Figure 4-1: Ground Screws
A
A. Internal ground screw
B. External ground screw
68
B
Reference Manual
00809-0100-4408
Figure 4-1).
Reference Manual