Answer / k.prakashchandra

Fusing current for a round wire is approximately is equal to
k d^3/2 Amps.d=dia in mm, k=80 for copper, 12.8 for tin and
59 for Al.Fusing factor =minimum fusing current/current
rating of fuse.This value should be more than one and is
usually two.

Answer / karthik_elec

fuse is calculating with fuse factor, for example,
if u want to protect one equipment, that equipment taking 10 amps, if u put 10 amps fuse, that fuse will operate in 14.5 amps 4 hrs continues running, fuse factor is 1.45, fuse operating current = 1.45(fuse factor)*10(fuse rating). that means 14.5A 4hrs continues running. this is from IEC (INTERNATIONAL ELECTRO TECHNICAL COMMISSION)

what will happen when two dc motors are connected to each other and anyone of them rotated?

1 Answers  

---

can we transmit power with out cable if it is possible how it is possible.

2 Answers  

---

How to know about the rating(voltage and other) of induction motor if its name plate is missing at the manufacturing site.

0 Answers   ABB,

---

What is the current flow in 230v ac supply ? What is the current flow in 415v Ac supply ?

6 Answers  

---

In Transmission System if the potential difference at the two end of line are same then is the transmission of power will continue ? if yes then how.

1 Answers   IOCL,

---

what is the EMF

2 Answers  

---

What is the ampereage of .75 ton Ac

1 Answers  

---

how can i determine the KVA/MVA rating of transformer precisely?? is there any standard test?????

0 Answers  

---

how df/dt relay operates & how it works?

1 Answers  

---

what is meant by damper winding ?

3 Answers  

---

why any normal motor have to provide star & delta winding distribution during starting?

4 Answers  

---

why is it that the HT motors & motors having very low kW rating(<1kW) have windings connected in STAR, whereas the motors having in between kW ratings have DELTA connected windings??

5 Answers  

---