XLPE Cable-Current Rating

XLPE Insulated Armored & Unarmored Cables:

1.1 KV SINGLE CORE AL/COPPER COND,XLPE INSULATED CABLES As per IS:7098 (Part-I)

Cross-sectional area        (Sq MM)

UN-ARMOURED CABLE

Overall Diameter (mm)

Normal Current Rating in Amps

Short Circuit Current Rating for 1Sec.duration in K. Amps

Aluminums Conductor

Copper Conductor

Aluminums

Copper

Ground Duct Air Ground Duct Air
1cX4

8

 —  —  —  48  47  45  0.376  0.572
1cX 6  9  48  45  45  60  59  57  0.564  0.858
1cX10  10  62  62  61  80  78  77  0.940  1.430
1cX16  11  81  80  83  104  102  106  1.504  2.288
1cX25  12  99  90  115  130  115  145  2.350  3.575
1cX 35  13  117  110  135  155  140  175  3.290  5.005
1cX50  15  138  125  170  185  165  215  4.700  7.150
1cX70  16  168  155  210  225  200  270  6.580  10.01
1cX 95  18  204  185  255  265  235  330  8.930  13.59
1cX120  20  230  210  300  300  265  380  11.28  17.16
1cX150  22  265  230  342  335  300  430  14.10  21.45
1cX185  24  295  260  385  380  335  495  17.39  26.46
1cX240  27  340  300  450  435  385  590  22.56  34.32
1cX300  30  390  335  519  490  430  670  28.20  42.90
1cX400  33  450  380  605  550  480  780  37.60  57.20
1cX 500  36  500  430  700  610  530  900  47.00  71.50
1cX 630  40  555  485  809  680  590  1020  59.22  90.09
1cX800  47  625  530  935  740  630  1140  75.20  114.40
1cX1000  51  690  570  1065  780  660  1250  94.00  143.00
                   

1.1 KV SINGLE CORE AL/COPPER COND,XLPE INSULATED CABLES As per IS:7098 (Part-I)

Cross-sectional area        (Sq MM)

ARMOURED CABLE

Overall Diameter (mm)

Normal Current Rating in Amps

Short Circuit Current Rating for 1Sec.duration in K. Amps

Aluminums Conductor

Copper Conductor

Aluminums

Copper

Ground Duct Air Ground Duct Air
1cX4  10  —  —  —  48  47  45  0.376  0.572
1cX 6  11  45  45  40  60  59  57  0.56  0.858
1cX10  12  59  62  53  80  78  77  0.94  1.43
1cX16  13  76  80  73  104  102  106  1.50  2.29
1cX25  14  99  90  115  130  115  145  2.35  3.58
1cX 35  15  117  110  140  155  140  175  3.29  5.01
1cX50  17  138  125  170  185  165  215  4.70  7.15
1cX70  19  168  155  210  225  200  270  6.58  10.01
1cX 95  22  204  185  255  265  235  330  8.93  13.59
1cX120  24  230  210  300  300  265  380  11.28  17.16
1cX150  25  265  230  342  335  300  430  14.10  21.45
1cX185  28  295  260  385  380  335  495  17.39  26.46
1cX240  30  340  300  450  435  385  590  22.56  34.32
1cX300  33  390  335  519  490  430  670  28.20  42.90
1cX400  38  450  380  605  550  480  780  37.60  57.20
1cX 500  41  500  430  700  610  530  900  47.00  71.50
1cX 630  46  555  485  809  680  590  1020  59.22  90.09
1cX800  51  625  530  935  740  630  1140  75.20  114.40
1cX1000  56  690  570  1065  780  660  1250  94.00  143.00
                   

1.1 KV Two CORE AL/COPPER COND,XLPE INSULATED As per IS:7098(Part-I)

Cross-sectional area        (Sq MM)

UN-ARMOURED CABLE

Overall Diameter (mm)

Normal Current Rating in Amps

Short Circuit Current Rating for 1Sec.duration in K. Amps

Aluminums Conductor

Copper Conductor

Aluminums

Copper

Ground Duct Air Ground Duct Air
2cX4  13  34  28  30  44  37  39  0.376  0.572
 2cX 6  14  43  37  40  55  47  50  0.564  0.858
2cX10  17  57  48  53  74  61  67  0.940  1.430
2cX16  17  78  61  70  94  78  85  1.50  2.29
2cX25  19  95  80  99  120  100  125  2.35  3.58
2cX35  20  116  94  117  145  120  155  3.29  5.01
2cX50  22  140  110  140  170  145  190  4.70  7.15
2cX70  25  170  140  176  210  175  235  6.58  10.01
2cX95  28  200  165  221  250  210  290  8.93  13.59
2cX120  31  225  185  258  285  240  330  11.28  17.16
2cX150  33  255  210  294  315  270  375  14.10  21.45
2cX185  37  285  235  339  355  300  435  17.39  26.46
2cX240  41  325  270  402  410  350  510  22.56  34.32
2cX300  44  370  305  461  460  390  590  28.20  42.90
2cX400  48  435  350  542  520  440  670  37.60  57.20
2cX500  54  481  405  624  580  480  750  47.00  71.50
2cX630  62  537  470  723  680  575  875  59.22  90.09
                   
                   

1.1 KV Two CORE AL/COPPER COND,XLPE INSULATED As per IS:7098(Part-I)

Cross-sectional area        (Sq MM)

ARMOURED CABLE

Overall Diameter (mm)

Normal Current Rating in Amps

Short Circuit Current Rating for 1Sec.duration in K. Amps

Aluminums Conductor

Copper Conductor

Aluminums

Copper

Ground Duct Air Ground Duct Air
2cX4  15  34  28  30  44  37  39  0.376  0.572
 2cX 6  16  43  37  40  55  47  50  0.564  0.858
2cX10  18  57  48  53  74  61  67  0.940  1.430
2cX16  19  78  61  70  94  78  85  1.50  2.29
2cX25  21  95  80  99  120  100  125  2.35  3.58
2cX35  23  116  94  117  145  120  155  3.29  5.01
2cX50  25  140  110  140  170  145  190  4.70  7.15
2cX70  28  170  140  176  210  175  235  6.58  10.1
2cX95  31  200  165  221  250  210  290  8.93  13.59
2cX120  34  225  185  258  285  240  330  11.28  17.16
2cX150  37  255  210  294  315  270  375  14.10  21.45
2cX185  40  285  235  339  355  300  435  17.39  26.46
2cX240  45  325  270  402  410  350  510  22.56  34.32
2cX300  49  370  305  461  460  390  590  28.20  42.90
2cX400  52  0.33  435  350  542  520  440  670  37.60
2cX500  60  0.34  481  405  624  580  480  750  47.00
2cX630  66  0.36  537  470  723  680  575  875  59.22
                   

1.1 KV Three CORE AL/COPPER COND,XLPE INSULATED As per IS:7098(Part-I)

Cross-sectional area        (Sq MM)

UN-ARMOURED CABLE

Overall Diameter (mm)

Normal Current Rating in Amps

Short Circuit Current Rating for 1Sec.duration in K. Amps

Aluminums Conductor

Copper Conductor

Aluminums

Copper

Ground Duct Air Ground Duct Air
3cX 4  14  34  28  30  44  37  39  0.376  0.572
3cX 6  16  43  37  40  55  47  50  0.564  0.858
3cX 10  18  57  48  53  74  61  67  0.940  1.430
3cX 16  18  78  61  70  94  78  85  1.50  2.29
3cX 25  21  95  80  99  120  100  125  2.35  3.58
3cX 35  22  116  94  117  145  120  155  3.29  5.01
3cX 50  25  140  110  140  170  145  190  4.70  7.15
3cX 70  30  170  140  176  210  175  235  6.58  10.01
3cX 95  32  200  165  221  250  210  290  8.93  13.59
3cX 120  35  225  185  258  285  240  330  11.28  17.16
3cX 150  39  255  210  294  315  270  375  14.10  21.45
3cX 185  43  285  235  339  355  300  435  17.39  26.46
3cX 240  49  325  270  402  410  350  510  22.56  34.32
3cX 300  53  370  305  461  460  390  590  28.20  42.90
3cX 400  59  435  350  542  520  440  670  37.60  57.20
3cX 500  66  481  405  624  580  480  750  47.00  71.50
3cX 630  73  537  470  723  680  575  875  59.22  90.09
                   

1.1 KV Three CORE AL/COPPER COND., PVC INSULATED CABLES As per IS:1554 (Part-I)

Cross-sectional area        (Sq MM)

ARMOURED CABLE

Overall Diameter (mm)

Normal Current Rating in Amps

Short Circuit Current Rating for 1Sec.duration in K. Amps

Aluminums Conductor

Copper Conductor

Aluminums

Copper

Ground Duct Air Ground Duct Air
3cX 4  18  34  28  30  44  37  39  0.376  0.572
3cX 6  19  43  37  40  55  47  50  0.564  0.858
3cX 10  20  57  48  53  74  61  67  0.940  1.430
3cX 16  20  78  61  70  94  78  85  1.50  2.29
3cX 25  23  95  80  99  120  100  125  2.35  3.58
3cX 35  25  116  94  117  145  120  155  3.29  5.01
3cX 50  29  140  110  140  170  145  190  4.70  7.15
3cX 70  32  170  140  176  210  175  235  6.58  10.01
3cX 95  35  200  165  221  250  210  290  8.93  13.59
3cX 120  39  225  185  258  285  240  330  11.28  17.16
3cX 150  43  255  210  294  315  270  375  14.10  21.45
3cX 185  48  285  235  339  355  300  435  17.39  26.46
3cX 240  53  325  270  402  410  350  510  22.56  34.32
3cX 300  58  370  305  460  460  390  590  28.20  42.90
3cX 400  65  435  350  542  520  440  670  37.60  57.20
3cX 500  72  481  405  624  580  480  750  47.00  71.50
3cX 630  81  537  470  723  680  575  875  59.22  90.09
                   

1.1 KV Three CORE AL/COPPER COND,XLPE INSULATED As per IS:7098(Part-I)

Cross-sectional area (Sq MM)

UN-ARMOURED CABLE

Overall Diameter (mm)

Normal Current Rating in Amps

Short Circuit Current Rating for 1Sec.duration in K. Amps

Aluminums Conductor

Copper Conductor

Aluminums

Copper

Ground Duct Air Ground Duct Air
 3.5X25  22  95  80  99  120  100  125  2.35  3.58
 3.5X35  24  116  94  117  145  120  155  3.29  5.01
 3.5X50  27  140  110  140  170  145  190  4.70  7.15
 3.5X70  31  170  140  176  210  175  235  6.58  10.01
 3.5X95  34  200  165  221  250  210  290  8.93  13.59
 3.5X120  38  225  185  258  285  240  330  11.28  17.16
 3.5X150  43  255  210  294  315  270  375  14.10  21.45
 3.5X185  46  285  235  339  355  300  435  17.39  26.46
 3.5X240  52  325  270  402  410  350  510  22.56  34.32
 3.5X300  57  370  305  461  460  390  590  28.20  42.90
 3.5X400  65  435  350  542  520  440  670  37.60  57.20
 3.5X500  73  481  405  624  580  480  750  47.00  71.50
 3.5X630  82  537  470  723  680  575  875  59.22  90.09
                   
                   

1.1 KV Three & Half CORE AL/COPPER COND,XLPE INSULATED As per IS:7098(Part-I)

Cross-sectional area (Sq MM)

ARMOURED CABLE

Overall Diameter (mm)

Normal Current Rating in Amps

Short Circuit Current Rating for 1Sec.duration in K. Amps

Aluminums Conductor

Copper Conductor

Aluminums

Copper

Ground Duct Air Ground Duct Air
 3.5X25  25  95  80  99  120  100  125  2.35  3.58
 3.5X35  27  116  94  117  145  120  155  3.29  5.01
 3.5X50  30  140  110  140  170  145  190  4.70  7.15
 3.5X70  35  170  140  176  210  175  235  6.58  10.01
 3.5X95  38  200  165  221  250  210  290  8.93  13.59
 3.5X120  42  225  185  258  285  240  330  11.28  17.16
 3.5X150  46  255  210  294  315  270  375  14.10  21.45
 3.5X185  51  285  235  339  355  300  435  17.39  26.46
 3.5X240  56  325  270  402  410  350  510  22.56  34.32
 3.5X300  60  370  305  461  460  390  590  28.20  42.90
 3.5X400  71  435  350  542  520  440  670  37.60  57.20
 3.5X500  79  481  405  624  580  480  750  47.00  71.50
 3.5X630  88  537  470  723  680  575  875  59.22  90.09
 

1.1 KV Four CORE AL/COPPER COND,XLPE INSULATED  CABLES As per IS:7098 (Part-I)

Cross-sectional area (Sq MM)

UN-ARMOURED CABLE

Overall Diameter (mm)

Normal Current Rating in Amps

Short Circuit Current Rating for 1Sec.duration in K. Amps

Aluminums Conductor

Copper Conductor

Aluminums

Copper

Ground Duct Air Ground Duct Air
4cX4  17  34  28  30  44  37  39  0.376  0.572
4cX 6  18  43  37  40  55  47  50  0.564  0.858
4cX 10  20  57  48  53  74  61  67  0.940  1.430
4cX16  20  78  61  70  94  78  85  1.50  2.29
4cX 25  24  95  80  99  120  100  125  2.35  3.58
4cX35  26  116  94  117  145  120  155  3.29  5.01
4cX 50  29  140  110  140  170  145  190  4.70  7.15
4cX70  34  170  140  176  210  175  235  6.58  10.01
4cX 95  37  200  165  221  250  210  290  8.93  13.59
4cX 120  41  225  185  258  285  240  330  11.28  17.16
4cX 150  45  255  210  294  315  270  375  14.10  21.45
4cX 185  50  285  235  339  355  300  435  17.39  26.46
4cX 240  56  325  270  402  410  350  510  22.56  34.32
4cX 300  63  370  305  461  460  390  590  28.20  42.90
4cX 400  70  435  350  542  520  440  670  37.60  57.20
4cX 500  79  481  405  624  580  480  750  47.00  71.50
4cX 630  88  537  470  723  680  575  875  59.22  90.09
                   

1.1 KV Four CORE AL/COPPER COND,XLPE INSULATED  CABLES As per IS:7098 (Part-I)

Cross-sectional area (Sq MM)

ARMOURED CABLE

Overall Diameter (mm)

Normal Current Rating in Amps

Short Circuit Current Rating for 1Sec.duration in K. Amps

Aluminums Conductor

Copper Conductor

Aluminums

Copper

Ground Duct Air Ground Duct Air
4cX4  18  34  28  30  44  37  39  0.376  0.572
4cX 6  19  43  37  40  55  47  50  0.564  0.858
4cX 10  21  57  48  53  74  61  67  0.940  1.430
4cX16  22  78  61  70  94  78  85  1.50  2.29
4cX 25  26  95  80  99  120  100  125  2.35  3.58
4cX35  28  116  94  117  145  120  155  3.29  5.01
4cX 50  32  140  110  140  170  145  190  4.70  7.15
4cX70  37  170  140  176  210  175  235  6.58  10.01
4cX 95  40  200  165  221  250  210  290  8.93  13.59
4cX 120  44  225  185  258  285  240  330  11.28  17.16
4cX 150  49  255  210  294  315  270  375  14.10  21.45
4cX 185  54  285  235  339  355  300  435  17.39  26.46
4cX 240  65  325  270  402  410  350  510  22.56  34.32
4cX 300  68  370  305  460  460  390  590  28.20  42.90
4cX 400  76  435  350  542  520  440  670  37.60  57.20
4cX 500  86  481  405  624  580  480  750  47.00  71.50
4cX 630  94  537  470  723  680  575  875  59.22  90.09
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About Jignesh.Parmar
Jignesh Parmar has completed his B.E(Electrical) from Gujarat University. He has more than 11 years experience in Power Transmission-Power Distribution-Electrical energy theft detection-Electrical Maintenance-Electrical Projects(Planning-Designing-coordination-Execution). He is Presently associate with one of the leading business group as a Assistant Manager at Ahmedabad,India. He is Freelancer Programmer of Advance Excel and design useful Excel Sheets of Electrical Engineering as per IS,NEC,IEC,IEEE codes. He is technical Author for "Electrical Mirror" and "Electrical India" Magazines. He is Technical Blogger and Familiar with English, Hindi, Gujarati, French languages. He wants to Share his experience & knowledge and help technical enthusiasts to find suitable solutions and updating themselves on various Engineering Topics.

83 Responses to XLPE Cable-Current Rating

  1. Syed Saif Ahmed says:

    Dear Sir / Madam,
    Please send me the cable size selection chart for Low voltage & Medium voltage. I will be very great full to you.
    Regards
    Syed

  2. Ramachandra laxman says:

    Thank you for this cable selection chart. Thank u verymuch. Do u have any information about conductor,s DC current carrying capacity .Please help me sir, Thank u.

  3. p.vadivel says:

    dear sir,
    ratinng cable size of 300kva to 450kva trasformer.

  4. shafeeq says:

    dear sir,
    thanks.can you please give details of selecting UPS and generators rating.

  5. Ramchandra B Damle says:

    Dear Sir

    Will you please furnish me short time ratings of HT XLPE insulated cables e. g. 10% for XXX Hrs., 20% for XXX Hrs. and so on ?

  6. SHAMAUN HAKIM says:

    Can a 10 guage XPLE insulated copper wire used as leads for oil immersed CTs withstand around 90 deg C continously in transformer oil? What is the compatability of XPLE wire with transformer oil? What is the specific density of XLPE insulation?

  7. Gnana Reuben says:

    Can we get the standard from which the XLPE current values are derived / referred.

  8. paulson says:

    can you tell me the voltage drop calcultaion of 11KV XLPE cable around 600m long

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      Calculate Voltage drop of Cable.
      Calculate Size of Cable.
      Calculate Current Capacity of Cable.

      • paulson says:

        Mr Jignesh,

        what is the difference between MCCB,ACB and VCB..

        I heard that above 630A we should use ACB ,but MCCB’s are available till 1600A.

        So can you tell me from which rating we have to go for ACB and VCB

        Is there any difference in the operation of MCCB and ACB.

        Thanking you,
        Paulson

      • karuppanasamy says:

        i am engaged in arecanut leaf plate manufacturing activity which need heaters with die of 8000 watts.what specification of power cable can i put.

  9. please send details of
    1-cable size with current rating data
    2- cable gland size & type
    3- rating of contractor & over load relay

    • This Topic is already covered.Read Electrical Notes Carefully

      • nirav shah says:

        Dear Jignesh, I am nirav shah from hyderabad. i would like to know what is the difference between current carrying capacity for xlpe insulated single core copper flexible cables for AC and Dc applications. Benchmark being single core 240sqmm which can carry upto 550amps in AC application.

  10. Udaikiran says:

    Dear Sir,

    Details furnished by you are excellent.Sir, i need to buy the unlock version .Did you published any books on cable sizing,busbar calculation, breaker designing etc?My maid id is udai_kiran1983@yahoo.com

  11. ramkewal says:

    sir, i read to this cable size and current rating chart it is very use full for us so i request u please send this chart in my Email
    RAMKEWAL

  12. ramkewal says:

    i will be hope full with this chart
    Thank you.
    RAMKEWAL

  13. Ronald Mutambiranwa says:

    Dear Sir / Madam,
    Please send me the cable size selection chart for Low voltage & Medium voltage(single phase and three phase indicating amps each size can carry. I will be very great full to you

  14. Babji Duvva says:

    can you please provid me for the current rating for 1C X 185 SQ MM copper cables

  15. nmr says:

    11kv/433v TFP-1000 kva/500kva/750kva the fl currents on LT side are 1333.3/1000/666.6 amps. what is size of 4 core xlpe alluminium is used pl tell me.

  16. vamsi says:

    this chart about cables is nice but give us some information about OH cables, and underground cables .

  17. d s negi says:

    WHAT IS THE BIS – IS CODE FOR 11 KV CROSS ARMOURED CABLE

  18. Azad Anupam says:

    Very useful….

  19. Mohammed says:

    Dear Jignesh,

    Your cable selection table is very helpful. But i’ve a question to clarify? how do we determine the cable current capacity of cables running in parallel? for example if my breaker is rated at 1000A, what size of cable conductor should be terminating at the terminals per phase, can i terminate 2 x 1c x 400 per phase or how do we decide the conductor sizing? as i understand there is a derating factor of cables when connected in parallel? may be you can ellaborate further and may be send me details on the cable sizing formulation and other useful data on my email : manjarwalla@gmail.com

    • Use Equation
      % Voltage Drop:=(1.732 X (Full Load Current)X(RCosØ+j SinØ)XLengthX100) / Line Voltage X No of Run X 1000.
      Here No of Run cable is Either 1,2 or more in parallel.
      You can also use “Cable Design” sheet of the Excel Tool Page of this Blog

      • Mohammed says:

        Dear Jignesh,

        Thank you for your prompt reply. I’ve also gone through your cable design excel sheet,wonderful program. On the cable design program how do you determine the starting and running cos and sin thetha? do you have any thumb rule for calculating the cable runs in a faster way? for example if my full load current is 1000A as incomer or any feeder load connected to my panel. As from the program i’ve to input the the respective KW to attain nearest full load current before i can get the runs of cables?

  20. B.R.Suryawanshi says:

    Dear Sir,
    Plz.tel me this XLPE cables can we use 100% loading? for How much length cables are de rated?
    Thanks.

    • this Rating is as per Standard Cable Catalog and IS. Cable Rating never indicate derating factor. Because Derating Factor depends upon Your Application.
      It is depend upon Type of Laying Cable -
      =In Air,Land, at 0.500mt depth at 1 meter depth,
      =Air-Land Temperature,
      =in bundle,=In separate,Distance between two Cable, etc.
      If Cable Rating is 100 Amp It may be 80 Amp or 90 Amp or 100 Amp depend upon Laying of cable.

  21. A. A. Mahadik says:

    Pl. send me LT cable current carrying capacity charts

  22. Varry importent for me this. Site

  23. shine says:

    Good work, its very useful

  24. hariharan.v says:

    sir,if i have 7.5kw unit then how can i select cable for that unit with out using chart.give me that formula for me.

  25. zahid says:

    well done sir you have a great job and sacrifices for Electrical Engineering.

  26. Hareesh R says:

    Hi,
    I really appreciate your effort to share consolidated information..

  27. sulaimant says:

    dear
    sir/madem
    pleas send me cebel formula for given voltag and
    also send me cabel and amp tebal

  28. Jayaprakash.N says:

    It is very useful informations… Gr8

  29. Ribhu Gaur says:

    what is the thumb rule for above calcualtions..? please share the formula for approximate current ratings in 1.1 kv XLPE cables .

  30. kuruvilla says:

    Mr. Jignesh, can you please tell me what size of cable is required for solar installation. My panel rating is Isc=8.5 A, Voc=36.5 V. I’m using two series panels in 3 arrays, basically an 2×3 system. Thanks. Length one way will be 30 feet from panels to inverter.

  31. Nasir says:

    400 volt,528 amp and insulation xlpe ,cable size required

  32. vinod pol says:

    hiii sir, thanx for this information but sir pls tell me the formula or any thumb rule for calculating of cable/wire size as per given load…..

  33. Abdul Guffar says:

    Thank you for this cable selection chart. Do u have any information about conductor,s DC current carrying capacity .Please mail me sir, Thank u.

  34. prabhakar says:

    sir
    can u tell me the formula how to calculate the cable sizes corresponding amps..

  35. mintu kumar pandit says:

    why use mastic tape for 11 kv cable joint,please tell me sir.

  36. Dear sir,
    what is the function of cable fillers ? please reply.

  37. sir ,
    difference between round shape cable and delta shape cable please me understand

    • mintu kumar pandit says:

      whats type of 11kv spout ?

      • Anees Mustafa says:

        electrical infrastructure construction Q&A for exp houseing scheme what are requrment of houesing scheme of all utlates and what are gape electrical serviese between water ,sewg,gas and other serviese in under ground

  38. krishnamurthy says:

    How to measure currenraings of armed & unarmed cables

    • krishnamurthy says:

      Differance between kw,kvar and kva

      • Anil Thomas says:

        I want to know that whats the current carrying capacity for 4 runs of 3.5 core 400 Sq.mm Al. armoured XLPE cable in ground . How it can be calculate. ( please send a copy of tables if any )

        which means if 3.5 core 400sq.mm cable carries 370 amps in ground and when it is 2 runs it will not be double of 370. it will less than double. how it will calculate ???

        Please give me a reply
        with regards
        By Anil

      • You are mixing two different topic ..
        (1) If we laid cable in ground,air or trench it’s current capacity will be decrease due to surrounding temp.
        (2) If we laid cable in group / single it’s current capacity will be decrease those effect called “derating factor of cable..
        You find in Electrical Tool page.
        If we run two cable for same phase obviously it’s capacity would be double…

      • KRISHNAMURTHY says:

        How to measure capacitance&inductance in A.P.Transco meters and send formula of KW&KVAR&KVA.

  39. KIRAN PATEL says:

    KIRAN PATEL
    dear sir what is service factor in motor and which kind machine in use same motor

  40. bj vijay says:

    Hai …

  41. John says:

    Dear Sir,

    My doubt might sound silly to you, but I just wanted to clarify it. From the given cable ampacity ratings in the tables above, how can we calculate the maximum power rating for the respective multi-core cables.

    Thank you.

  42. Suresh Chaudhary says:

    Dear Jignesh,
    pl suggest me regarding cable rating across laying ground 700 running feet for 750A load bearing at resisdence building there jurk load AC. Pl give cable size.

    Regards,
    Suresh Chaudhary

  43. bikram kaushik says:

    there is no any power rating of cable.only current rating of cable are mentioned.power rating is concerned to the equipment.

  44. Shruthi says:

    Dear Jignesh,
    Sir what’s the formula to select the cables sizes for the particular current ratings?

  45. Masoud Bu-Arbyay says:

    You did good , its very useful

  46. mohamed says:

    dear jignesh how to calculate the busbar size in 630amps breaker 3ph ?

  47. Manoj Patil says:

    Dear Sir

    Thanks for this information. this is very usefull for us.

  48. sunil says:

    Dear Sir,

    Can you explain that the current rating you have mentioned in Ground ,Air, or duct is quite opposite to what manufacture state in their product catalogue.

    regards

  49. Perumalkonar says:

    how many runs of 3.5C 240 sq.mm al. conductor xlpe pvc insulted cables to be laid to supply to a circuit which is maximum current draw is 800 A.

  50. shree raja says:

    Yes very use full.thank you.

  51. venu says:

    Sir,

    please let me know the current carrying capacity of 3C*2.5 sqmm copper cable in air.

  52. karan says:

    sir,
    if i want to select power cable for 2o hp motor. and i am going to use 3 core alluminium cable.
    then what will be the cable size?

  53. manoj singh says:

    sir,
    if i want to select 50sq cable for 11kv. and i am going to use 3 core cable.
    then what will be the cable size?

    • Fetsum Asayehegn says:

      your table is very useful, thank you and I need the cable size of 22 kw, 3ph, 380volt for my deep well pump motor at a deep distance of 300 metrrs
      Thank you & best regards,
      Fetsum

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