How do you select a cable size(cu and Al) for a particular load
Answer Posted / gnd kumaran
First calculate the load current.
Then select the cable according to the current carrying
capacity.[To know the current carrying capacity, refer
cables catalog]
Load Current X Length of the cable X Voltage drop per Amps
per Meter [in milli volts]/ 1000
now we will get voltage drop
If voltage drop is below 3- 5 percentage, you can choose
the above cable, if it is more than 3-5 percentage, go to
next higher size and repeat the calculation.
| Is This Answer Correct ? | 3 Yes | 1 No |
Post New Answer View All Answers
iam preparing for rrb section engineer post in electrical branch.suggest the right textbook for my reference.fromwhere i will get the previous q.papers?
For a spring controlled governer the relation F = ar+b (F is the controlling force, r is the radius of rotation a and b are constants), indicates that the governer is
PLEASE INFORM ABOUT THE IDEAL TEST RESULTS OF MAGNETIC BALANCE TEST OF TRANSFORMER 33/11 kv DELTA-STAR T/F
In constant power region of 3-phase IM torque-speed characteristics, if frequency increases flux A does not alter B decreases C increases D none of above
what is the meaning of impedance protected in instrument cooling fan
Is it possible to download the Siemens Selection Chart(TYPE 2 coordination) for 1) fuseless selection 2)Fuse selection
can we use ZNyn11 transformer instead of Dyn11 transformer in distribution for effectively eliminating harmonics from the industrial loads.
we have amp, voltage, kw, length detail then how to calculte copper & alluminium size of conductor of 3-phase induction motor
Alternator rotor earth fault relay circuit
why does connected a indutor with mnsformeretering core of current transformer ?
WHY IL=IPH IN STAR AND WHY IPH=IL/1.732 IN DELTA? WHAT IS REASON BEHIND IT?
it is possible to rotate the DG engine dc starter with wrong polarity connections? why?
how does a submersible pump work..?
what is the stear deltaprinceple?
THERMAL CAPACITANCE IS MEASURED IN..................................................