[Code of Federal Regulations]

[Title 46, Volume 4]

[Revised as of October 1, 2006]

From the U.S. Government Printing Office via GPO Access

[CITE: 46CFR111.60-23]



[Page 234]

 

                            TITLE 46_SHIPPING



                  (This book contains parts 90 to 139)

 

   CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED)

 

PART 111_ELECTRIC SYSTEMS_GENERAL REQUIREMENTS--Table of Contents

 

               Subpart 111.60_Wiring Materials and Methods

 

Sec.  111.60-23  Metal-clad (Type MC) cable.



    (a) Metal-clad (Type MC) cable permitted on board a vessel must be 

continuous corrugated metal-clad cable.

    (b) The cable must--

    (1) Have a corrugated gas-tight, vapor-tight, and watertight sheath 

of aluminum or other suitable metal that is close-fitting around the 

conductors and fillers and that has an overall jacket of an impervious 

PVC or thermoset material; and

    (2) Be certified or listed by an independent laboratory as meeting 

the requirements of UL 1569.

    (c) The cable is not allowed in areas or applications exposed to 

high vibration, festooning, repeated flexing, excessive movement, or 

twisting, such as in engine rooms, on elevators, or in the area of drill 

floors, draw works, shakers, and mud pits.

    (d) The cable must be installed in accordance with article 334 of 

the NEC. The ampacity values found in table A6 of IEEE Std 45 may not be 

used.

    (e) The side wall pressure on the cable must not exceed 1,000 pounds 

per foot of radius.

    (f) Equipment grounding conductors in the cable must be sized in 

accordance with article 250-95 of the NEC. System grounding conductors 

must be of a cross-sectional area not less than that of the normal 

current carrying conductors of the cable. The metal sheath must be 

grounded but must not be used as a required grounding conductor.

    (g) On an offshore floating drilling and production facility, the 

cable may be used as interconnect cable between production modules and 

between fixed distribution panels within the production modules, except 

that interconnection between production and temporary drilling packages 

is prohibited. Also, the cable may be used within columns, provided that 

the columns are not subject to the conditions described in paragraph (c) 

of this section.

    (h) When the cable is used within a hazardous (classified) location, 

terminations or fittings must be listed, and must be appropriate, for 

the particular Type MC cable used and for the environment in which they 

are installed.



[CGD 94-108, 62 FR 23908, May 1, 1997]