For locations that require compliance with the Mine Safety and Health Administration’s (MSHA) Part 7, Subpart K of Title 30 of the Code of Federal Regulations (CFR) signal cables mining applications, Optical Cable Corp. typically recommends its MSHA-rated B-Series Breakout Cable. MSHA cables are designed to withstand the rigors of difficult pulls, high tensile loading and severe crush occurrences and can repeatedly endure the abuse associated with the extreme demands in surface and subsurface mining. The B-Series Breakout Cable is one of OCC’s most rugged, high strength cables. Each individual, color-coded sub-cable has its own tight-buffered coating to protect each fiber. In addition, these cables have a tight-bound outer jacket, which is pressure extruded directly over the cable’s core. This combination of a helically stranded core, and a pressure extruded outer jacket provides an overall cable construction that offers crush and impact protection and increased tensile strength.

As an alternative, if cost is an issue and the conditions warrant it, MSHA-rated distribution style cabling is an alternative. This cable is also extremely rugged, featuring the helically stranded core and extruded outer jacket, but not the additional 2.5-mm subcable for each fiber.