MIL-DTL-38359E
3. REQUIREMENTS
3.1 First article. Cables specified under this specification shall be subjected to a first article
inspection (see 6.6). First article inspection shall be performed at laboratory acceptable to the procuring
activity on sample units produced with equipment and procedures used in production.
3.2 Materials. The materials for the principal components of the cable shall be as specified herein.
Prior approval to use substitute material must be obtained from the qualifying activity. When a definite
material is not specified, a material shall be used that will enable the finished products to meet the
performance requirements of this specification. Acceptance or approval of any constituent material shall
not be construed as a guaranty of the acceptance of the finished product. All materials used in the
manufacture of cables furnished to comply with this specification shall be of such quality and form that the
finished product conforms to the requirements of this specification.
3.3 Design and construction. The cable shall be designed and constructed for use in airport lighting
systems. It shall be constructed for continuous outdoor service under all weather conditions while on the
surface of the ground, buried directly in the ground, installed in conduit, or submerged in fresh or salt
water. The voltage rating, high potential withstanding voltage, wire size, and average thickness of the
insulation for the cables specified herein shall be as specified in table I.
TABLE I. Combined cable characteristics.
Characteristic
Class 1
Class 2
Voltage rating
3,000 V rms
5,000 V rms
High potential withstanding
7,500 V rms (5 minutes)
11,000 V rms (5 minutes)
voltage
Insulation thickness (average)
.075 inch (1.91 mm)
.11 inch (2.79 mm)
Diameter:
Minimum
.31 inch (7.87 mm)
.38 inch (9.65 mm)
Nominal
.32 inch (8.13 mm)
.39 inch (9.91 mm)
Maximum
.34 inch (8.64 mm)
.41 inch (10.41 mm)
3.3.1 Conductors. The conductor shall conform to type C, number 8 AWG, class B, tin coated.
3.3.1.1 Splices. Splices in the conductor shall be such that each splice will not increase the diameter
of the conductor. No splice shall be made in the conductor as a whole. Not more than one strand shall
be spliced in any one foot of conductor.
3.3.1.2 Resistance. The resistance of the conductor of 1,000 feet of completed cable at +20 ºC shall
not be greater than .65 ohm.
3.3.1.3 Conductor shield. A semiconducting layer or tape shall be applied directly over the stranded
conductor, over which the cable insulation shall be applied. The conductor shield shall have a minimum
thickness of .005 inch (0.13 mm).
3.3.1.4 Marker threads. Nonhygroscopic-type marker threads shall be provided in the conductor
strands or directly along the conductor for identification purposes. The color and number of threads used
shall be identical with those used by the manufacturer on his other products.
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