INTRINSICALLY SAFE USAGE
Selected portable radios with appropriate factory in-
stalled options are certified as Intrinsically Safe by the
Factory Mutual Research Corporation. Intrinsically Safe
approval includes Class l, II, Ill, Division 1 hazardous
locations in the presence of Groups C, D, E, F and G
atmospheres. Non-Incendive approval includes Class I,
Division 2 hazardous locations in the presence of Groups
A, B, C and D atmospheres.
Hazardous locations are defined in the National Elec-
trical Code. Useful standards NFPA 437A and NFPA
437M for the classifications of hazardous areas can be
ordered from the National Fire Protection Association,
Batterymarch Park, Quincy, MA 02269.
BATTERY PACKS
Only battery packs identified with a green FM/CSA
label shall be used with a portable radio that is rated and
labeled as Factory Mutual/CSA Intrinsically Safe. Use of
nonspecified battery packs voids Factory Mutual ap-
proval.
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