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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Page edited by E.C. (Google).



17 Comments


  1. harry ojeagbase
    Apr 19, 2015

    I want to know how to determine the sizes of almond cables used in the design of smdb panel


  2. sinnadurai sripadmanabn
    Feb 08, 2015

    consider factors for duty of motor-S1,S2,S3…. and AC1,AC2,AC3 etc


  3. Dhaval Merchant
    Jul 08, 2014

    Helpful data

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