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Markings for EX Trucks
Only Explosion Proof (EX) Equipment that has been tested and approved for use in
Hazardous Classified Areas by a NRTL can be marked accordingly. EX Trucks must
be clearly
identified with the EX Marker and signs must be posted at the entrances to EX
environments. EX Trucks must be marked with a warning label and must be marked
with a nameplate showing the approved Class, Group
and operating temperature.
EX Marker
Industrial Trucks approved for use in Hazardous Classified
Areas must be designated with a specific marker. "To facilitate identification by operators and
supervisory personnel, a uniform system of marking . . . shall be used."
NFPA 505(2002) 8.4.1.1.2
The marking required by NFPA 505 and UL 583 for
identifying Type Designation EX Industrial Trucks is illustrated below.
The
width of the EX marker is 5 inches. The marker consists of
a black border and lettering on a yellow background.
Gregory Industrial Trucks applies this
EX marker to the sides of each Gregory EX Truck in a prominent
position.
EX Entrance Label
Entrances to Hazardous Classified Areas, where EX Trucks
are used, are required by NFPA 505 to be posted with the sign below.
(size 16" x 11")
Gregory Industrial Trucks can supply
Plant Managers with these EX Labels for their facilities.
E-mail request for EX Entrance Labels.
Warning Label
EX trucks must be visibly marked with "a
statement calling attention to the necessity for keeping the enclosures of
electrical parts and wiring tightly assembled while in hazardous areas." UL
583 48.1d.
All
Gregory EX trucks are marked with the following warning label:
Nameplate Marking
Classified EX Equipment is required to have a nameplate with specific
markings. "Approved Equipment shall be marked to show the
class, group, and operating temperature or temperature range referenced to a
40°C ambient." NEC 2002, Article 500.8(B)
The nameplate is provided by the
testing laboratory and is affixed to the approved equipment. A standard Gregory nameplate for a Type EX Industrial Truck is below:
"Equipment not marked to indicate a
division, or marked 'Division 1' or 'Div. 1,' is suitable for both Division 1 and 2 locations.
Equipment marked 'Division 2' or 'Div. 2' is suitable for Division 2
locations only." NEC 2002, Article 500.8(B)
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