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NOTE: This is an unformatted excerpt from our online fire protection training library.

Identifying Materials & Equipment

Zone Groups

Group IIA is almost the same as Group D, but the dividing values of MESG are somewhat higher. The maximum value of MESG for Group IIA is 0.90 mm compared to 0.75 mm for Group D. The MIC ratio dividing points are the same (0.80) for Group IIA and Group D.
NOTE: This is an unformatted excerpt from our online fire protection training library.

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