MIL-DTL-13486 Cables, Special Purpose, Electrical: Low-Tension, Heavy-Duty, Single Conductor And Multiple Conductor, Shielded And Unshielded, General Specification ForThis specification covers two types \(shielded and unshielded\) of insulated, heavy-duty, single and multiconductor, electrical cables for use in low-tension circuits \(see 6.1\).

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MIL-DTL-13486E

TABLE III. Voltage requirement for finished cables.

Voltage (V rms) 1/

Conductor size

Class A cable

20 to 12

2,000

10 to 8

2,000

6 to 0000

3,000

Class B cable

All sizes

1,000

1/ The frequency shall be 60 Hz.

3.5.3 High voltage to ground. Cable shall withstand the voltage specified in table IV without

grounding.

TABLE IV. High voltage to ground voltage requirements.

Conductor size

Voltage (V rms)

Class A cable

20 to 18

4,000

5,000

14 to 12

8,000

10 to 0000

10,000

Class B cable

All sizes

6,000

3.5.4 High voltage between insulated conductors (class B only). Cables shall withstand an

alternating current voltage of 6,000V rms at 60 Hz between insulated conductors.

3.5.5 Fungus resistance. The cable shall be fungus resistant. After being exposed to fungus

conforming to in ASTM G21, the cable shall meet the requirements of 3.5.3 and no evidence of fungal

growth (see 4.7.4.4).

3.5.6 High temperature resistance. The cable shall withstand 250�2 degrees Fahrenheit (�F) without

breakdown of insulation or sheath.

3.5.7 Low temperature resistance. The cable shall withstand -65�3 �F with no evidence of cracking,

breaking, separation, or other damage.

3.5.8 Oil absorption. Cable components shall show no evidence of cracking, rupture, or other

damage after immersion in oil at 158 �F for 20 hours. For sizes 16 to 20, the outer diameter of the cable

shall not swell more than 25% in excess of the original cable diameter. Other size cables shall not swell

to more than 20% in excess of the original cable diameters.

3.5.9 Liquid immersion. The cable components shall evidence no cracking, rupture, or other

damage after 20 hours of immersion in distilled water, a 5% (by weight) salt water solution, or ethylene

glycol conforming to A-A-52624.

3.5.10 Flammability. A flame, resulting from application of a gas flame to the cable, shall travel at a

rate not exceeding one inch per minute. The cable surface shall not flame for more than one minute after

the gas flame is withdrawn. Burning particles shall not fall from the cable.