Blonder tongue AMM-806, Reference Manual

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Current Ratings for Electronic Cables
The maximum continuous current rating for an electronic cable is
limited by conductor size, number of conductors contained
within the cable, maximum temperature rating of the cable, and
environmental conditions such as ambient temperature and air
flow.
To use the current capacity chart, first determine conductor size,
temperature rating, and number of conductors from the applicable
product description for the cable of interest.
Next, find the current value on the chart for the proper temperature
rating and conductor size. To calculate the maximum current
rating/conductor, multiply the chart value by the appropriate
conductor factor. The chart assumes cable is surrounded by still
air at an ambient temperature of 25˚ C. Current values are in
RMS Amperes and are valid for copper conductors only.
No. of Conductors**
Factors
1 1.6
2 - 3 1.0
4 - 5 .8
6 - 15 .7
16 - 30 .5
** Do not count shields unless used as a conductor.
NOTE: Current ratings are intended as general guidelines
for low power electronic communications and
control applications. Current ratings for power
applications generally are set by regulatory
agencies such as UL, CSA, NEC, and others.