[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: 46CFR111.70-5]



[Page 235-236]

 

                            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 111.70_Motor Circuits, Controllers, and Protection

 

Sec.  111.70-5  Heater circuits.



    (a) If an enclosure for a motor, master switch, or other equipment 

has an electric heater inside the enclosure that is energized from a 

separate circuit, the heater circuit must be disconnected from its 

source of potential by a disconnect device independent of the enclosure 

containing the heater. The heater disconnecting device must be adjacent 

to the equipment disconnecting device. A fixed sign, warning the 

operator to open both devices, must be on the enclosure of the equipment 

disconnect device, except as in paragraph (b) of this section.

    (b) If the location of the enclosure for a motor, master switch, or 

other equipment for deck machinery is remote from the motor and 

controller disconnect device, a sign must be fixed to the enclosure if 

the disconnect arrangement required by paragraph (a) of this section is 

not used. The sign must warn the operator of the presence of two sources 

of potential within the enclosure and show the location of the heater 

circuit disconnect device.

    (c) Electric heaters installed within motor controllers and 

energized from a separate circuit must be disconnected



[[Page 236]]



in the same manner as required by paragraph (a) of this section or by 

Sec.  111.70-7(d).



[CGD 74-125A, 47 FR 15236, Apr. 8, 1982, as amended by CGD 94-108, 61 FR 

28282, June 4, 1996]