Answer / umesh 123

Firstly the current flows through the phase wire and returns in neutral.if we connect the fuse in neutral it will burn after sh ckt, but the line lives in load(machine) so it will harmful

2nd- the magnitude of neutral cable is half 3 phase line where the unbalanced load(current) returns through neutral.

Answer / ghanshyam singh

i think the rating of device in which the fuse is used has
more capacity than the rating of fuse,therefore it can be
considered that the fuse will blow out first and the device
will be saved.
by ohms law v is proportional to i so i think the
current decreases through the neutral wire but i dont
know that haps in the second half cycle of ac currrent

how to choose the cable rating for load (KW)? EXAMPLE.50KW load

14 Answers   ACC, NCUI, Polycab, PowerSol, Siemens, SW,

---

400 kvtransmission lines in india are connected in star or delta

10 Answers   NTPC,

---

Which rccb 30ma,100ma,300ma sensitivity should be used in domestic line and what is difference, advantage and disadvantage of all three

2 Answers  

---

What are the insulation standerds for eg H clase and how many insulation standerds are there and its standerds??????

0 Answers  

---

How to calculate the multiplying factor for energy meter with ct ratio given

0 Answers  

---

Why indicate only 440V to 3-phase supply.

4 Answers  

---

what is tha between elcb & rccb?

3 Answers   Essar,

---

WHAT IS THE THUMB RULE FOR DECIDING THE CURRENT RATING OF COPPER WIRES SAY 2.5/4/6/10 MM SQUARE SIZES??

14 Answers   Dubai Group, Saudi Delta Groups, Savitha Electricals,

---

What are the major reasons for balancing hydro-thermal mix?

0 Answers  

---

why motors are rated in HP?

3 Answers   HCL, ncpl,

---

what is the minimum insulation resistance for HT AND LT motor ?

3 Answers  

---

Why the Petrol Guns in the Petrol bunk are earthed?

3 Answers   ITC Infotech,

---