Siemens SCALANCE W788C-2 Operating Instructions Manual page 21

Grounding
NOTICE
Damage to the device due to potential differences
To fully eliminate the influence of electromagnetic interference, the device must be
grounded. There must be no potential difference between the following parts, otherwise the
device or other connected device could be severely damaged:
• Housing of the SCALANCE W700 and the ground potential of the antenna.
• Housing of the SCALANCE W700 and the ground potential of a device connected over
• Housing of the SCALANCE W700 and the shield contact of the connected Ethernet
Connect both grounds to the same foundation earth or use an equipotential bonding cable.
EXPLOSION HAZARD
DO NOT CONNECT OR DISCONNECT EQUIPMENT WHEN A FLAMMABLE OR
COMBUSTIBLE ATMOSPHERE IS PRESENT.
EXPLOSION HAZARD
SUBSTITUTION OF COMPONENTS MAY IMPAIR SUITABILITY FOR CLASS I, DIVISION
2 OR ZONE 2.
EXPLOSION HAZARD
DO NOT OPEN WHEN ENERGIZED.
General notes on use in hazardous areas according to UL-HazLoc
EXPLOSION HAZARD
DO NOT DISCONNECT WHILE CIRCUIT IS LIVE UNLESS AREA IS KNOWN TO BE
NON-HAZARDOUS.
This equipment is suitable for use in Class I, Division 2, Groups A, B, C and D or non-
hazardous locations only.
SCALANCE W788C-2
Operating Instructions, 11/2014, A5E03692120-07
Ethernet.
cable.
WARNING
WARNING
WARNING
WARNING
5.1 Lightning protection, power supply and grounding
Connection
21