How to select the cable size for the given load ?Pls
explain the Formulae
Answers were Sorted based on User's Feedback
Answer / sree
presuming, the unit of load is in HP(It is out put power)
output in KW= 735.5xHP(A).
Input in KW= A/Effy.(B).
Current= B/((1.732 * V * 0.7) (for 3 Phase star connected
load)(C)
Starting current= (1.5 to 2 times of full load current
(approx.)(D)
Based on cable catalague the size of cable will be chosen
as per above current rating(D).
or
Presuming the load is in KW(It is input power)
current=KW/((1.732 * V * 0.7) (for 3 Phase star connected
load)(A).
Starting current= (1.5 to 2 times of full load current
(approx.)(B)
Based on cable catalague, the size of cable will be chosen
as per above current rating(B).
Is This Answer Correct ? | 1 Yes | 1 No |
Answer / vinay
Depending on amps rating.
A=P/V (for 1phase. P=Power in W, V=Voltage)
A=P/(1.732 * V * 0.7) (for 3 Phase)
Is This Answer Correct ? | 6 Yes | 7 No |
Answer / jagjeet
Dear Mannu/ Vinay
Efficiency has to be considered for the system also.
Is This Answer Correct ? | 1 Yes | 4 No |
WHAT IS THE DIFFERENCE BETWEEN UNDERVOLTAGE COIL, CLOSING COIL AND SHUNT TRIP COIL OF AN ACB?
difference between substation & grid substation?
why the generating voltage in India is 11kV or why is it be transmitted as multiples of 11
34 Answers ACC, Bhel, ECI Engineering and Construction, NTPC, SBL, Senthur Power Services,
If Neutral Grounding Resistor (GR) failed/shorted. Is it repairable.
What is differential relay ? where it can be used?
1 Answers Scope International,
what is B , c & d curves in MCB characteristics i e Full Form of B , C & D . sir please give me answer
salam&hi, i need to know about how can i calculate an enough current for the new building before i submit it to the suppliers
What is Skin effect in Cable?
what happens if DC earthing and AC earthings are shorted?
What’s electric traction?
can we amplify dc signals.how can it be done
Why tripping not occur when the transmission breaks? Doesn't we provide earthfault protection for it?