Interested to Buy Any Domain ? << Click Here >> for more details...
how calculate cable size in squre mm, when the load is
given by in kw? do u have current rating chart of elctrical
cables?
- 4 Answers
- 12266 Views
- I also Faced
- E-Mail Answers
Answer Posted / shahidul islam (srabon)
When the power is known in kW then the formula for knowing
the current in A is I=(P/(sr(3)*V(phase)). Now we the
current. After finding the current we know that the current
density of copper is 2.5. Finally to calculate the cable
isze we apply the given formula in practice.
I=A*2.5
so, A=I/2.5 (in square mm)
Where A=Area of conductor or here cooper is used
A=w*l
w=width
L=length of the conductor
Hope the answer of the question
| Is This Answer Correct ? | 2 Yes | 2 No |
Post New Answer View All Answers
How to maintain ac plant?
I need to connect a synchronous generator to the grid using automatic synchronization and two circuit breakers (one for synchronization, one for end connection to the grid), how to determinate the required diameter of the cables?
1.why we are using blocks in withoutgaplightning arrester 2.why we ar using bushing in withoutgap lightning arrestor
LT cable fault chaecking equipment and to find out the distance at what distence it failure . Name and where it is available?
Did RMU have ct and pt ?
What happens if we give the supply to the rotor of induction motor and make its terminal shorted?
I want formula to calculate current loss with distance in km.I searched many sites but didn't right answer.Plz reply me
what is the difference between active power and reactive power and apparant power in practical as well as theoritical
what is interpose? where it is used and why it is used?
WHY THE DIMENSION OF TWO SAME RATED MACHINE IS DIFFERENT ?
we have earthmat at 110KV substation.we would like to take earth resistance.b some says that by connecting earth megger terminals (C1,P1) at middile point of earthmat (at riser) will cause voltage gradient at other earthmat nods and dont get exat earth resistance.when connecting at end nods will get exat value . is it correct .please explain
1.how many earth pits are required for 1000 k.w plant include substion , transformer ? 2. how many earth pits are required for 500kva generator.what is formula to calcute?
What is method of calculating the fault current for a MDB, 50KW, 3PH, 415V, 50HZ?
We need to current density & short circuit calculation at 65kA for aluminium & copper busbar.
how to electronic energy metter failed in electomagnectic fild passing in the metter and which thing to defect more on metter.
