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Phase Conductor Construction
The phase conductors are aluminum alloy 1350-H19, hard-drawn, compact, concentric lay stranded, 6 AWG to 500 kcmil in size.
Neutral Conductor Construction
The standard neutral conductor is aluminum conductor steel reinforced (ACSR) for use with aluminum phase conductors.
Insulation Material
The former Type designation NS-1 and NSF-2 are no longer applicable. New type designations, "NS75" and NS90", now reflect the temperature ratings.
For Type NS75 cables, the standard insulation on the phase conductor(s) is black linear low-density polyethylene (LLDPE) with a 75°C temperature rating.
For Type NS90 cables, the standard insulation on the phase conductor(s) is black crosslinked polyethylene (XLPE) with a 90°C temperature rating.
Assembly
The phase conductors of a Type NS75 or NS90 cable (including, if applicable, the additional insulated control/supply conductor) are cabled around the neutral conductor without fillers with a length of lay from 25 to 60 times the finished diameter of one of the phase conductors.
Phase Identification
For unjacketed triplex cables only, one conductor shall be printed and one shall be unprinted.
For jacketed triplex and quadruplex cables, solid colour coded identification shall be used.
For unjacketed quadruplex cables, coloured stripes shall be used.
The standard colour code is black, red, blue for phase conductors with a bare neutral support conductor.
For any construction, an optionally insulated neutral support conductor will have white stripes on the insulation, or a solid white jacket.
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