MIL-DTL-3432J
TABLE VII. Minimum size of uninsulated ground drain wires.
Power
Minimum ground drain wire sizes (AWG)
conductor
sizes
Number of power conductors
(Kcmil and
AWG)
Two
Three
Four
Five
500
4/0
2/0
1/0
2
400
3/0
1/0
1
3
350
2/0
1
2
4
250
1/0
2
3
5
4/0
1
3
4
6
3/0
2
4
5
7
2/0
3
5
6
8
1/0
4
6
7
9
1
5
7
8
9
2
10
6
8
9
3
10
7
9
9
4
12
8
10
10
6
10
12
10
12
12
8
10
12
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3.2.6.3 Fillers. Fillers shall be used when required to affect a circular cross section (see 3.1.4).
3.2.6.4 Binders and separators. A binder applied over the cabled conductors to hold them in place is optional. A
separator shall be applied over the cabled conductor prior to the application of the shield or jacket. The use of a
separator for unshielded conductors of 8 AWG and larger shall be optional with the manufacturer. A separator shall
be applied over the shield, if present, prior to the application of the jacket. For single conductor cable where no shield
is present, a separator shall not be applied. Separators shall be applied as a heat barrier over the cabled conductors
with polyethylene insulation, prior to extrusion of the jacket. The binders and separators shall be of the types
specified in table VIII.
TABLE VIII. Binders and separators.
Separator types
Binder types
For shielded cable
(optional)
For unshielded cable
Under shield
Over shield
Closed wrap,
Closed wrap, closed
closed braid,
Polyester or
braid, compound - filled
Open wrap, open
compound-filled
polypropylene tape.
tape, polyester or
braid
tape, polyester or
polypropylene tape.
polypropylene
tape.
3.2.7 Jacket. The jacket shall be extruded and then vulcanized (except for thermoplastics) over the cabled
conductors or shielding, when used, and shall be well centered, single - or double-layer jacket. Double-layer jackets
shall be used on cables whose minimum jacket thickness is .098 inch (2.49mm) or over as specified in table IX.
Double-layer jackets shall be applied in two concentric layers that are strongly bonded together; the outer layer shall
be at least 50% of the total thickness. A reinforcement consisting of an open braid or two layers of seine twine or
cabled cotton, or the equivalent, applied in reverse directions, shall be provided between the layers of the jacket. For
single conductor cables where no shield is present, the jacket shall be applied directly over the insulation and adhere
to the insulation. The jacket thickness shall be as specified in table IX, unless special outside diameters are
specified.
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