14E-5-506 Zone 20, 21, and 22 locations for combustible dusts or ignitable fibers/flyings,
The provisions of Article 506 of NFPA 70 are adopted by reference with the following modifications.
1.   Revise subsection 506.15(A) by deleting items (3) and (4).
2.   Revise subsection 506.15(C) item (3) to read:
"Type MI cable with listed termination fittings."
3.   Revise subsection 506.15(C) by deleting items (4), (5), and (6).