SPEC 83020

Twin Parallel 600 Volt Underground Service Entrance

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Construction:

  1. Conductor:Conductors are stranded, compressed 1350-H16/H26 (3/4 Hard) aluminum
  2. Insulation:Cross Linked Polyethylene (XLPE)
  3. Neutral:Cross Linked Polyethylene (XLPE) with three Yellow Extruded Stripes (YES)

Applications and Features:

Conductors are stranded, compressed 1350-H16/H26 (3/4 Hard) aluminum, insulated with cross-linked polyethylene. Neutrals are identified by three yellow extruded stripes. Cables with “YES” neutrals have sequential footage markers. Conductors are durably surface printed for identification. One-phase conductor and one neutral conductor are twin paralleled. These cables are capable of operating continuously at the conductor temperature not in excess of 90°C for normal operation in wet and dry locations, 130°C for emergency overload, and 250°C for short circuit conditions.

Specifications:

  • ASTM B231 Standard Specification for Concentric-Lay-Stranded Aluminum 1350 Conductors
  • ASTM B609 Standard Specification for Aluminum 1350 Round Wire, Annealed and Intermediate Tempers, for Electrical Purposes
  • ASTM B901 Standard Specification for Compressed Round Stranded Aluminum Conductors Using Single Input Wire Construction. (The number of strands for both phase and neutral may differ)
  • ICEA S-105-692 Standard For 600 Volt Single Layer Thermoset Insulated Utility Underground Distribution Cables
  • Table 1 – Weights and Measurements
    Stock NumberCode WordPhase Cond. SizePhase StrandDia. Over Phase ConductorPhase Insul. ThicknessDia. Over Phase InsulationNeutral Cond. SizeNeutral StrandNeutral Insul. ThicknessDia. Over Neutral InsulationApprox. ODApprox. Weight
    AWG/KcmilNo.inchmilinchAWG/KcmilNo.milinchinchlb/1000ft
    TBACleary810.129600.24981600.2490.49760
    TBABiscayne870.142600.26287600.2620.52364
    TBAKean670.178600.29867600.2980.59688
    TBAGavilan470.225600.34547600.3450.69126
    TBAAtlus270.283600.40327600.4030.806183
    All dimensions are nominal and subject to normal manufacturing tolerances
    1. The actual number of strands may differ for single input wire per ASTM B901
    Table 2 – Electrical and Engineering Data
    Stock NumberCode WordPhase Cond. SizeDC Resistance @ 25°CAC Resistance @ 90°CInductive Reactance @ 60HzGMRAllowable Ampacity in Duct 90°CAllowable Ampacity Directly Buried 90°C
    AWG/KcmilΩ/1000ftΩ/1000ftΩ/1000ftftAmpAmp
    TBACleary81.02641.3160.03680.00425570
    TBABiscayne81.04691.34230.03740.00435570
    TBAKean60.65870.84460.03510.00547095
    TBAGavilan40.41410.5310.03310.006890125
    TBAAtlus20.26050.3340.03140.0086120165
    Notes:
    1. Inductive reactance assumes cables are cradled in conduit, and the neutral is carrying no current.
    2. Triple parallel inductive reactance calculation assumes the phase conductors are adjacent to one another.
    3. Conductors assumed to be reverse lay stranded, compressed construction.
    4. Phase spacing assumes cables are touching.
    5. Resistances shown are for the Phase conductors only.
    6. Ampacity based on 90°C conductor temperature, 20°C ambient, RHO 90, 100% load factor.

    Revision: