when ur using single phase type of load for a 3.5core power
cable .Why neutral is .5 and how much current in the
neutral if we consider neutral as a reverse path for three
phases.

Answer Posted / kishan

If the current in all three phases are equal,the current in
the neutral is zero,hence the neutral conductor is half the
size of Phase cable.

Is This Answer Correct ?    7 Yes 1 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

Name of the relay of low lub oil presuure in DG sets

1685


Draw a SLD for main panel for school having connected load of 1200kw and emergency generator 200kw.also show the increase of additional load of chiller 225kw in the lv panel indicating meter postion size of transformer ,cables and capacitor bank.

625


IN MY SYSTEM THERE IS ONLY OVER CURRENT EARTH FAULT RELAY IS AVAILABLE. FOR THE UNBALANCE SENSING IS THERE ANY RELAY IS AVAILABLE? THE SAME CTs WHICH ARE USED FOR THE OVER CURRENT EARTH FAULT RELAY CAN USE FOR UNBALANCE ALSO?

3384


I want to know all basics of electrical engineering

1525


WHY IL=IPH IN STAR AND WHY IPH=IL/1.732 IN DELTA? WHAT IS REASON BEHIND IT?

5723






What is K-rated transformer? What is the use of it? What can be the size(pls provide calculation if possible) of K- factor transformer for 550kW,690V motor operating with drive (VFD)?

1920


A 11KV, 1200 A breaker combination fixed in a cubicle for HT motor.Is normally for 11 KV motor fuse is using? if Yes, What range fuse is required?

1618


what is lumped and distributed elements?

1633


I want to design a heating coil of 80/20 nicrome for 3.5KW please give me the calculations choosing for physical dimensions assume coil voltage will be 110V AC assume necessary conditions

1289


How to calculate the efficiency of Turbo Generator(Alternator) in general....?

2353


On Which Pressure PRV is operated.

1371


Is it possible to protect 3phase overload and earth fault of the 3phase system using two CT's.

1679


how cables go in and come out for distribution from the feeder pillar box?

1702


boiler is running in rankine cycle and deisel generator is....?

1652


if there are six generators (3 gas CATT, one Jenbacher o1 MW each, and two nos Diesel 01 no 01 mw other 0.65mw EDGs ( say), 3 CAtt gas set have identical pole pitch,01mw EDG and Jenbacher gas Set have different pole pitch, how their power connection can be done to connect a common bus bar during installation. in short, how different pole pitched generators power connection can be done to connect a common busbar system through generators incomer ACBs.

1248