Electrical Design specifications






Electrical Design specifications..

Answer / me

Greetings all,

iam working in an out door lighting design for our plant
and i calculated the total watt needed (sum of all lights)
= 53 kw, 220 volt

our power supply is 480V

so, I chosed a 75 KVA transformer dry type 480/220-127 V 3
phase 60 Hz

cable size from feeder to transformer primary = 50 mm2 (1/0
AWG)

cable size from transformer secondary to distribution panel
board = 125 mm2 (250 MCM)

distribution panel board main breacker = 250 A

So, are my calculations ok ? any changes or suggestions ?

thanks in advance

Is This Answer Correct ?    2 Yes 0 No

Post New Answer




More Electrical Engineering Interview Questions

Which motor has high Staring current A. Series DC motor, B.Induction motor c.Synchronous motor D.DC Shunt Motor

4 Answers   CCP,


how rated the neutral voltage of transformer and reactor, e.g. 400/220, 200MVA transformer have neutral voltage of 33kv. and reactor voltage 145kv. how this rating decided?

1 Answers   MEIL,


in alternator how we can give power to rotor ? its power is AC or DC ?

5 Answers  


If auto trip is operated, can you close the breaker.

2 Answers   KSEB, Siemens, L&T,


difference between earthing and grounding?

2 Answers   ABB, L&T, Bharti,






What are HT & LT Cables? What are their values?

3 Answers   IOCL,


Swg formulae

0 Answers   Bokaro Steel,


If the generator will trip, what you will do as an electrical technician in charge.

1 Answers  


what are iron and copper losses

4 Answers  


How much DC or AC Current that a Human Body withstand for Electrical Shocks?

4 Answers   Suzlon,


distribution is maximum done by a)radial b)network c) parallel d)b & c

0 Answers  


what is LA CT PT panel?

3 Answers   NTPC, Dwarikesh Sugar Industries,






Categories
  • Civil Engineering Interview Questions Civil Engineering (5069)
  • Mechanical Engineering Interview Questions Mechanical Engineering (4437)
  • Electrical Engineering Interview Questions Electrical Engineering (16572)
  • Electronics Communications Interview Questions Electronics Communications (3914)
  • Chemical Engineering Interview Questions Chemical Engineering (1091)
  • Aeronautical Engineering Interview Questions Aeronautical Engineering (214)
  • Bio Engineering Interview Questions Bio Engineering (96)
  • Metallurgy Interview Questions Metallurgy (361)
  • Industrial Engineering Interview Questions Industrial Engineering (258)
  • Instrumentation Interview Questions Instrumentation (2984)
  • Automobile Engineering Interview Questions Automobile Engineering (332)
  • Mechatronics Engineering Interview Questions Mechatronics Engineering (96)
  • Marine Engineering Interview Questions Marine Engineering (122)
  • Power Plant Engineering Interview Questions Power Plant Engineering (170)
  • Textile Engineering Interview Questions Textile Engineering (575)
  • Production Engineering Interview Questions Production Engineering (0)
  • Satellite Systems Engineering Interview Questions Satellite Systems Engineering (106)
  • Engineering AllOther Interview Questions Engineering AllOther (1376)