MIL-DTL-2036E
3.2.10 Cable entrance.
3.2.10.1 Nonrotating equipment. Where details of the provisions for cable entrance to the enclosed
equipment are not specified in the equipment specification, space shall be provided as suitable locations
at the top and bottom of the enclosure for installation of cable clamps, stuffing tubes or connectors. For
open, and open protected types, and any other enclosure not requiring stuffing tubes and when cable
clamps are necessary to prevent chafing, the following shall apply:
(a)
Metal enclosures shall have provision for installation of cable clamps specified in A-A-50552.
(b)
Plastic enclosures shall have provision for installation of electrically insulated cable clamps, and
be grounded in accordance with MIL-STD-1310.
3.2.10.2 Rotating equipment. Provision for cable connections shall be as required by the equipment
specification. Where provisions are not specified, they shall be in accordance with 3.2.10.1(b).
3.2.11 Protection against burning area. Interior surfaces which are in the wake of arcing contacts or
where an arc may cause short circuits between current-carrying parts, or between such parts and the
enclosure, shall be protected by sheets of laminated electrical insulating material conforming to
MIL-E-917. These sheets shall be secured to the enclosure surfaces by mechanical means rather than
by adhesives.
3.2.12 Protection of diagrams and instruction sheets. Where diagrams or instruction sheets are required
on or in the equipment by the equipment specification, or are otherwise so furnished, such diagrams or
instruction sheets shall be protected as specified in (a) or (b). Printing shall be of a non-fading type.
Diagrams and instruction sheets shall be secured to the inside of the enclosure by rivets, screws, clips,
mounting plate or brackets. Screws or rivets used to secure instruction sheets shall not penetrate airtight,
dusttight, hermetic, explosionproof, splashproof, watertight, or submersible enclosures.
(a)
Method 1 (preferred method): The diagram or instruction sheets shall be laminated between
sheets of vinyl chloride plastic conforming to class 1 of L-P-535. The laminating process shall be
such that a permanent bond is obtained between the paper and the plastic. Where the
reproduction process is such that a bond between the vinyl chloride and paper cannot be readily
attained, cellulose acetate plastic conforming to type I of L-P-504 or ethyl cellulose plastic may be
used.
(b)
Method 2: The paper on which the diagram or instruction sheet is printed shall be treated so as
to have acceptable oil, water, and fungus resistant properties. The diagram or instruction sheet
shall be covered with a sheet of vinyl chloride plastic conforming to class 1 of L-P-535.
3.2.13 Explosionproof enclosures. Explosionproof enclosures shall be in accordance with the appendix
to this specification, and as specified herein.
3.2.14 Provision for drainage of condensation. The following enclosures shall be provided with an
opening for draining accumulated moisture:
(a)
Watertight enclosures for nonrotating equipment except watertight enclosures for pushbuttons,
limit switches, and similar types of remote master switches.
(b)
Spraytight, totally enclosed, and watertight enclosures for rotating equipment, except that
connection boxes of such enclosures need not have provision for drainage.
The opening shall be located at the bottom or as near the bottom of the enclosure as practicable, in order
that it may drain the enclosure satisfactorily. A .25 by 18 National Pipe Thread (NPT) or larger pipe plug
made of brass or other non-corrosive material shall be used to close the opening. For HI shock
enclosures straight threads shall be used.
3.2.14.1 Number and location. Enclosures requiring a condensate drain shall be such that effective
gravity drain will be achieved with only one drain hole with the enclosure mounted in its normal orientation
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