MIL-DTL-27072 Cable, Power, Electrical And Cable, Special Purpose, Electrical, Multiconductor And Single Shielded, General Specification ForThis specification covers special purpose electrical multi-conductor and single shielded cable for electronic circuits where the cable will be protected in racks, tunnels, or within buildings, trailers, or equipment. Cables constructed using polyvinyl chloride \(PVC\) on insulated wires or for fillers, tapes, or jackets are not to be used for aerospace applications.

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MIL-DTL-27072E

6.1.3.1 PVC sheath (designator A). PVC is suitable for ambient temperatures up to 90�C for

continuous service and is suitable as a jacket for PVC insulated wires within the high conductor

temperature limits set forth in 6.1.1.3 for short time use. If the cable is to be bent or flexed at low

temperatures, extreme caution should be used with this type of sheath. It is not recommended that PVC

sheath be used when the cable is to be handled at temperatures below -10�C. Even though a cold bend

test at -40�C is provided in the specification, this test is only a comparison for quality control purposes

between various types of PVC that might be used and an assurance of proper extrusion techniques; the

test does not represent the physical use that the cable in the field may get by manual handling. PVC

sheath provides a tough abrasion-resistant outer covering for the cable.

6.1.3.2 Polyethylene sheath (designator B). Polyethylene is suitable for operation over the

temperature range specified in table XVI. Polyethylene gives a tough highly abrasion-resistant outer

coating and retains flexibility at low temperatures.

6.1.3.3 FEP (designator D) and PTFE (designator E) sheath. FEP and PTFE sheaths are intended

for the outer covering of cable to be operated at temperatures above those permissible with PVC and PE

sheaths.

6.2 Acquisition requirements. Acquisition documents should specify the following:

a. Title, number, and date of this specification.

b. PIN (see 1.2.1).

If required, the specific issue of individual documents referenced (see 2.2.1 and 2.3).

d. Title, number, and date of the applicable military specification sheet, length of cable, and

sheath and stripe or band color, if other than specified (see 3.3.2), required.

e. Required non-technical constructional changes such as the addition of binder tapes (see 3.3.4)

or other minor deviations that do not affect the performance requirements.

The percent shield coverage, if other than specified (see 3.5.2).

g. Packaging requirements (see 5.1).