how much current capacity of 300 sq. mm cable (4 core
aluminium) and 150 sq. mm cable ( 4 core aluminium)
Answers were Sorted based on User's Feedback
Answer / k.k dash
now a days company manufacture lower gauge of aluminium cable for there own profit,previously 300 sqmm alu cable can take 600 amp,bt now a days 300 sqmm will take 300*1.2=360 amp at 80% load which is healthy for user,same way 150 sqmm will take 150*1.2=180 amp
|Is This Answer Correct ?||8 Yes||3 No|
Answer / vishvendra singh
we know that current capacity of Alluminium conductor is 2
AMP/sqmm. thats by In normal condition 300sqmm cable current
capacity -600 A & 150 sqmm capcity is -300 A.
|Is This Answer Correct ?||14 Yes||10 No|
It depends on lot of factors. The duration of the load:
short-time[as in short-circuit case],continuous load,
intermittent load. It depends on also on ambient type [air,
underground-direct laid or in concreted duct],on thermal
resistivity of the ambient [if it is in underground],on
ambient temperature, on insulation type[bare, pvc, xlpe,
epr etc.] and other factors.
Let's say in short-circuit case for 1 sec 300 square mm
aluminum conductor pvc insulated. Permissible temperature
[for PVC short-time]= 150oC.Ambient air 30oC.
Ipermissible=27 kA[27000 A].
For the same cable in open air 30oC[NEC Table 310.15(B)
(17)] continuous load [75 oC]600 MCM=300 sqr.mm permissible
|Is This Answer Correct ?||1 Yes||2 No|
What is an Air COmpressor
how do u calculate CT rating for 10 mva transformer
what is star&delta connections?
how to calculate transformer load?
what is the write prosidure of stringing of 8meter pcc pole.
What is drain current of static relay?
How to select the Cable size for 550 Amps Load without seeing the cable Catalogue?
Why 1500 rpm of deasel generator please explain to me?
how i can calculate the size for fire cable
Why in ESP Positive earthed
Please specify the parts of VCB&ACB
Explain Need of a starter in a dc motor.? Also explain any two starting and speed control method of dc motor?