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  • Batt. Jumper Cables  



    Battery to battery cable type (UL approved):-

    Battery-Jumper-Cables

    Battery jumper cables are used to build battery banks. They are connecting the batteries studs in series or parralel using color code for the jumper cables, red for plus, black or white for negative.

     Cable with a red end are for positive battery parallel jumpers,

     Cable with a white end are for negative battery parallel jumpers,

     Cable with black both ends, or red both ends, are used for series battery interconnects, red for positive, black for negative,

     The difference between AWG #4 and AWG #4/0 cables size,

    Battery cables are using following cable section conform with North American electrical standard: 2/0, 4/0 and AWG 2 and AWG 4. If AWG 2 respective AWG 4 are more common the 2/0 and 4/0 are old British denomination for cable section. The pronunciation is 2 aught or 4 aught.

    The real difference is in cable section "Circular Mil Area" and the ampacity they carry, respective the maximum burst current they support before the isolation it is affected. And the fact they are descending as number and core section at the same time opposite to the common AWG numbers.

    The old British denomination it is still carried in the NEC for AWG 4/0, AWG 3/0 and AWG 2/0. Comparing to the most known gauge denomination the bigger AWG number (AWG 4/0) corresponds to a bigger section. The AWG 4/0 can carry up to 230A at 75 °C with a section of 107 mm2 before isolation constrains. The AWG 2/0 can carry up to 175A at 75 °C with a section of 67.4 mm2 before isolation constrains. The values are descending. The AWG 4 it is at the lower end and is carrying one third of the ampacity of AWG 4/0. Battery banks are using AWG 2 more frequent to AWG 4. AWG 2 has an ampacity of 115A.

    AWG

    Diameter

     

    Turns of wire (no insulation) Area Copper
    resistance
    Copper wire ampacity
    with 75 °C
    insulation (A)
      (inch) (mm) (per in) (mm2) (Ω/km)(mΩ/m)  
    0000 (4/0) 0.4600 11.684 2.17 107 0.1608  230
    00 (2/0) 0.3648 9.266 2.74 67.4 0.2557  175
    2 0.2576 6.544 3.88 33.6 0.5127  115
    4 0.2043 5.189 4.89 21.2 0.8152  85

    The information posted herein has been compiled by Clean Energy Brands from OEM product data and reputable publications. All rights reserved!



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