Determine the minimum cable size for a 28A single phase final sub circuit orig

Determine the minimum cable size for a 28A single phase
final sub circuit originating from the distribution board
supplied by three phase submain. The route length of the
final sub circuit is 54 m. Assume 1% voltage drop in the
consumer's mains. Submain specification: Cable: 50mm2 4
core V75 copper; Route length 42m; Maximum demand 135A per
phase

Question Posted / michael

1 Answers
5430 Views
I also Faced
E-Mail Answers

Determine the minimum cable size for a 28A single phase final sub circuit originating from the dis..

Answer / james santhosh lenin

3x4sqmm(phase,neutral,earth

Is This Answer Correct ?

3 Yes

2 No

Post New Answer

More Electrical Engineering Interview Questions

Dear Mr B C pal...Can you plz. put some light on principle of operation of Z-Ct in conjunction to its use with 1Cx1000Sqmm HT Cables & Directional Ground Fault / Over Voltage Relays...Regd..Parag v K 9899115632

0 Answers

WhY PF low at Time of PT Missing in HT Meter

2 Answers HCL,

3.The slip of an IM UNDER FL condition is about.....

1 Answers SSC,

Does the total power means fundamental plus Harmonics?

2 Answers

What is an electric arc?

3 Answers

What is the role and reponsibilities of Electrical Engineers in construction field?

12 Answers ETA, Garg Electronics, L&T,

why reactive power produce in generator? why inductive load absorbe reactive power?

2 Answers

What is the kiosk parts, about them and their functions ? If anybody have some PDFs files or details about this plz send it on tawhidfaisal@Yahoo.com

0 Answers

what is the difference between KVAR & KVA ?

11 Answers Bombay Rayon Fashions, Hyundai, Pricol,

What should be cable size for 75KVA 380/220 3ph transformer

3 Answers

75kw drive operated motor current fluctuation from(85-130)ampere.current setting in drive is 130amp.sometimes motor trip when current limit cross 130amps.I change the drive. still current fluctuate between 80-130amps but in this time motor not trip,current setting in drive is 130amps.where is the problem?

1 Answers

i am using auto transformer for starting of induction motor to provide reduse voltages...but the principle of a tansformer according to definition"which transform energy to on circuit to another circuit with constant power and constant frequency". so if i am using reduse voltage then current obsely hige because power is same.but we use auto transfarmer for starting of induction motor to give low current.but here according to definition we are giving hige current.

0 Answers

For more Electrical Engineering Interview Questions Click Here