Section 111.106-5 - Cable and wiring(a) Cable and wiring in hazardous locations must meet the cable construction and testing provisions of IEEE 1580; ANSI/UL 1309; MIL-DTL-24640C; MIL-DTL-24643C; or 60092-350:2014 and IEC 60092-353:2016 (incorporated by reference, see § 110.10-1 ), including the respective flammability tests contained therein, and must be of a copper-stranded type.(b) Type MC cables, when used, must meet the requirements in § 111.60-23 of this part.(c) For intrinsically safe systems under the standards cited in § 111.106-3(b)(1) and (b)(2) of this subpart, the wiring methods must meet Section 504.30 of NFPA 70 (incorporated by reference, see § 110.10-1 ). For intrinsically safe systems under the standards cited in § 111.106-3(b)(3) of this subpart, the installation and wiring must meet Clause 7, except for Clause 7.3.1, of IEC 60092-502:1999 (incorporated by reference, see § 110.10-1 ).USCG-2012-0208, 79 FR 48930 , Aug. 18, 2014, as amended by USCG-2020-0075, 88 FR 16367 , Mar. 16, 2023