How you calculating the current for a 2.5 Sqmm cable.
A 30 Hp 3 phase AC motor of power what size of cable is
used for this motor.
Answer Posted / shoyabkhan
the answer is wrong we can calculate by usbing this formula
W = 1.732*V * I Cos (phi)
30*746 = 415 * I * 0.8*1.732
I=36.2 AMP
| Is This Answer Correct ? | 24 Yes | 6 No |
Post New Answer View All Answers
what is the difference between b c d curves on mcb
If a transformer primary winding operates at 240v, the secondary at 120v and the load is 1500w & the transformer is rated at 92% efficient, what's the current flowing through the primary winding of the transformer? What is the formula for finding this?
How to select a contactor? How many types of contactors are available
Compare jfet’s and mosfet’s.
what is transistors comprised of?
how ct burden,magnetising current,ratio and knee point voltage are related & derived
Could u pls tell me the NPCIL electrical engineering interview questions for Executive trainee, and also guide me how to face the interview.
Why AC current leads voltage in capacitor and how?
what is Insulation monitoring device. where it is used? (in switchgear room or control panel or in field equipment)
Dear Sir/Madam, I have one questions we have three steam turbines and one Gas turbine and our industry linked with the public network, we have protection system one of the protection is reverse power we can export just four MW only i would like to ask about how to calculate the reverse power. Thank you in advance best regards
Please give me a erda placement paper
How to calculate the multiplying factor for energy meter with ct ratio given
What will happen if a dc source is given to a tubelight. Will it work or wont it work....
What is the meaning of 40X8X2 busbar dimensions for carring load of 400 Amps
how can we calculate the ampacity of the electrical wire/cable. and what are the factors must be considered. pls. elaborate.