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NEMA BI 50003-2026

Selection and Installation Guidelines For Fittings for Use in Hazardous (Classified) Locations
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These guidelines provide information on the proper application and installation of fittings intended for use in hazardous locations in accordance with the NEC. These guidelines cover conduit and cable fittings and cord connectors for installations in the following hazardous locations:
• Class I, Divisions 1 and 2
• Class II, Divisions 1 and 2
• Class III, Divisions 1 and 2
• Zones 0, 1 and 2
• Zones 20, 21 and 22
Standard conduit couplings are not considered fittings and are excluded from the scope of this guideline. These conduit couplings are suitable for installation in all the above classified areas.

SDO NEMA: National Electrical Manufacturers Association
Document Number BI 50003
Publication Date March 30, 2026
Language en - English
Page Count 47
Revision Level
Supercedes
Committee
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