MIL-DTL-16377J(SH)
3.6.10.1 Toggle switches. Double-pole, single-throw (DPST) switches shall conform to MS16569.
Single-pole, single-throw (SPST) switches shall conform to MS16656.
3.6.10.2 Push-button switches. Push-button switches shall be as specified in the applicable specification sheet.
3.6.10.3 Boots. Rubber boots in accordance with MIL-DTL-5423 shall be used to achieve the degree of
enclosure effectiveness specified in the applicable specification sheet. Unless otherwise specified in the applicable
specification sheet, type and style of boot shall be manufacturer s choice.
3.6.11 Wiring. Necessary internal wiring shall be furnished and installed. Connections at screw terminals shall
be made with pressure grip (solderless) connectors, in accordance with UL 486A-486B. Splice connections shall be
kept to a minimum and shall be made with UL approved insulated connectors, either crimp or screw type. Wires
parallel to lamps in Type I fixtures shall be run in a conduit, or shall be confined between reflector and housing.
There shall be no exposed uninsulated electrical terminal joints, junctions, wiring, or wiring accessories. Polyvinyl
chloride (PVC) insulation shall not be used.
3.6.11.1 Electrical connections for type III luminaires. Connections between the solid state device and driver
circuits shall be the quick disconnect plug-in type with built-in locking mechanism. Incoming power circuit
conductors and internal wiring conductors shall terminate on terminal boards. Terminal boards, lugs, and circuit
boards shall comply with MIL-E-917 requirements. Wire nuts and wire compression connectors are not permitted
within the luminaire enclosure.
3.6.11.2 Hook-up wires. Wire shall be of stranded, soft annealed copper of suitable cross section to provide
ample and safe current carrying capacity and mechanical strength.
3.6.11.3 Harnessing. Wiring shall be neatly formed into groups which shall be laced, tied, taped, or clamped in
a manner that provides support and prevents chafing of the wire insulation due to vibration and shock.
3.6.11.4 Insulation protection. Where wires are run through holes in metal partitions these holes shall be
furnished with grommets for the mechanical protection of insulation which otherwise could be subject to abrasion.
Care shall be exercised in the running of wires to ensure that they are not carried over or bent around any sharp
corner or edge.
3.6.12 Cable and cable entrances. Cable shall be as specified in the applicable specification sheet. Unless
otherwise specified in the applicable specification sheet, cables for Types I, II, and III, Class 1 and 2 fixtures shall
be in accordance with MIL-DTL-24643. Cable length shall be measured from the cable entrance of fixture, light, or
part to the end of the cable. A cable length tolerance of ±3 inches shall apply. The following stuffing tubes or box
connectors shall be used as cable entrance:
a. Unless otherwise specified in the applicable specification sheet, stuffing tubes, stuffing tube assemblies,
and stuffing tube parts shall be in accordance with ASTM F1836M. Holes for stuffing tubes shall be smooth and
true without any distortion of the box. Packing assembly and packing nut in accordance with ASTM F1836M shall
be used when cable entrances are integral with the housing.
b. Box connectors shall be Type I in accordance with A-A-50552. Grade and style shall be as specified in the
applicable specification sheet. Box connectors shall not be used in watertight fixtures or parts.
3.6.13 Ground potential and grounding.
3.6.13.1 Electrical circuits. Fixtures and parts shall operate satisfactorily on an ungrounded ship s power
system. The design shall be such that it does not impose a ground upon the electrical power system from which it is
energized. Wiring shall be as specified in the applicable specification sheet and figures 22, 23, and 24.
3.6.13.2 Exposed metal (or other conductive) parts. Construction of fixtures and parts shall be such that all
exposed parts of metal or other electrically conductive material are at ground (ship s hull) potential at all times.
Exposed metal portions of electrical parts (switches and lampholders) or other parts located near electrical circuits
(including parts inside enclosures where access is required for operation or adjustment) shall be in intimate physical
contact with the frame of the equipment or electrically connected to the frame if these parts could touch the
electrical circuits as a result of deformation, wear, or insulation failure.
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