[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: 46CFR111.05-31]



[Page 216]

 

                            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 111.05_Equipment Ground, Ground Detection, and Grounded Systems

 

Sec.  111.05-31  Grounding conductors for systems.



    (a) A conductor for grounding a direct-current system must be the 

larger of:

    (1) The largest conductor supplying the system; or

    (2) No. 8 AWG (8.4mm\2\).

    (b) A conductor for grounding the neutral of an alternating-current 

system must meet Table 111.05-31(b).



 Table 111.05-31(b)--Neutral Grounding Conductor for Alternating-Current

                                 System

------------------------------------------------------------------------

Size of the largest generator cable or equivalent

     for parallel generators--AWG-MCM (mm\2\)        Size of the system

-------------------------------------------------- grounding conductor--

                                   Less than or          AWG(mm\2\)

         Greater than                equal to

------------------------------------------------------------------------

                                2 (33.6).........           8 (8.4)

2 (33.6)......................  0 (53.5).........          6 (13.3)

0 (53.5)......................  3/0 (85.0).......          4 (21.2)

3/0 (85.0)....................  350 MCM (177)....          2 (33.6)

350 MCM (177).................  600 MCM (304)....          0 (53.5)

600 MCM (304).................  1100 MCM (557)...        2/0 (67.5)

1100 MCM (557)................  .................        3/0 (85.0)

------------------------------------------------------------------------