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Home / Download Center / Electrical Software Reviews / Cable Size Calculation Spreadsheet
Cable Size Calculations
Cable Size Calculations

Calculations //

Based On Motor Horse Power HP and Specified Current

Input data: Motor voltage (V L-L), Motor horsepower, Cable Temperature Rating (°C), Ambient Temperature (°C), Cable Length (ft) and Acceptable Voltage Drop (%).

Calculated Values: Operating Current (A), 125% Current per NEC (A), “Zero Length” Cable Size, Acceptable Voltage Drop (V), Actual Voltage Drop (V) and Actual Voltage Drop (%).

Note//

Conductor ampacities are based on NEC 2008, Table 310.16 (Not more than 3 current carrying conductors in racewary).

Software:Cable Size Calculations – Based On Motor Horse Power HP and Specified Current
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Cable Size Calculations

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40 Comments


  1. Feliciano Sambo
    Mar 20, 2020

    Hi, could you please send me the Cable Size Calculation Spreadsheet?


  2. Dilip
    Aug 31, 2019

    How to calculate neutral conductor size of 1000 kva and 2000 kva dry type distribution transformer


    • Afana
      Oct 10, 2019

      How to calculate neutral conductor size of 1000 kva and 2000 kva dry type distribution transformer


  3. Vairamuthu
    Aug 26, 2019

    dear sir how can we calculate the voltage drop, any formula available for that.


  4. Sojimon Varghese
    Jul 27, 2019

    Please give me the formula of cable size calculation
    In 3 phase and single phase


  5. Sojimon Varghese
    Jul 27, 2019

    Please give me the formula of cable size calculation formula


  6. Anil Kumar dorby
    Apr 21, 2019

    How we calculate electrical load in amp single phase equipment 10000 Watt, three phase equipment 2000 watt. So total load?
    What size cable required


  7. N.K.Sharma
    Feb 18, 2019

    Nice information provided by you.,sir really helpful. Thanks


  8. MANIKANDAN SEKAR
    Dec 04, 2018

    EASSY WAY TO CALCULATE COPPPER CABLE SIZE AS PER AMPS(MOTOR FULL LOAD)

    FOR EX: 10 HP MOTOR

    3 PHASE MOTOR CURRENT DRAWS 1.25A/HP
    10 HP MOTOR FULL LOAD AMPS (1.4*10)=14A
    =14+(1.25*10HP)
    = 26A
    1SQ MM CABLE TAKING AMPS =6A
    =26/6=4.33
    10 HP CABLE SIZE = 4 SQ MM


  9. bhargav
    Jun 16, 2018

    how to calculate cable size for EOT crane’s cable.
    i.e. Motor KW:15, duty:S4, 150st/hr, 3 phase, 415V cable length 25 mtr(Festoon-Trailing cable) .
    thanking you


  10. Shivam singh
    Mar 31, 2018

    Hii Sir ,

    I am confused in Three phase wire size calculation please let me know exact formula for three phase wire size calculation with multicore and single core cable.
    For example Load Current – 45 A , Voltage drop – 3 %, Cable Lenght -10 Meter,
    Please tell me how to calculate 4-Core Copper cable size for that ? Please do needful
    Thanks


    • Karthi
      Jun 05, 2018

      You should use 25 sq mm copper wire 4 core is enough


  11. mustafa
    May 30, 2017

    hi
    lwant aske you about how calculate cable size section if it wase almunium or copper
    thank yoy so much


  12. Md. Keafayet Ullah
    Apr 18, 2017

    How can I use cable size for 440 kW load? Please suggest Me?


  13. Ram Karan Sharma
    Jan 21, 2017

    I want to know cable size. I have to install a DG set of 40 KVA capacity and length of cabling about 2000M having one outlet about 4KVA at every 10 M


  14. uduman
    Mar 11, 2016

    How can calculations electrical load schedule please send me with examples


  15. Shaker Ahmad
    Dec 21, 2015

    Very nice

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