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
- 11272 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
What is Primary And Secondary Injection Test of Relay and Other Electrical Devices. How IT is carried out.
How to arrange a hous hold earthing system to keep minimum earth resistance( below 7ohms).
What is the rotor frequency of 10 Hp 1440 RPM 50HZ 415V ?
What aturn on methods of scr?
How to know any size of cable if there are not written on cable? Answer must be theurical not by experience.
how does the thyistor work in dc drive?
what is the reqirred voltage in HT motor to get full RPM on no load test?
it is in our knowledge tht right plug of supply of residential suppy system is phase n other is neutral...howevr the battery charger of mobile works in both ways...i mean it is not restricted in only one direction.ny of the holder of charger can hav phase .so y is it not lik tht phase of supply must b connected 2 phase of charger...?
Do closed loops systems require manual input?
how the B-H loop obtain under the static condition
What is power factor why we should maintain the power factor unless what will happen
What are the types of windings according to the construction?
draw the full wave and half wave circuit of 3 phase system and inverter circuit used in ups
Is it possible to measure correct value of earth resistance & cable insulation ristance with out disconncting earth lead & both sides of cable ends? If not, any other method to measure ER & CIR with out disconneting from the system.
Proviiding the Dedicated N earth and individual Body Earths ,Finally these all looped /Now my Question :- will it not harm in case of Transformer Fault current flows in Dediacted N Earthing to Looped Body Earthing.
