Answer / trak

First u hav to find load current. according to the load
current u can choose a braking current . the condition s
braking current should be higher than the load current n
the derating current should b higher than the braking
current. based on these u can choose opt cables frm the
selected suppliers.

Answer / varun

defined in steps as under:
1. Calculate load current
2. multiply this current( take some higher value) with 1.1
0r 1.2 acc. to derating factor
3. calculate length of cable to be used
4.see cable catalogue and calculate voltage drop in cable
which should be less then 6%

Answer / saravanan

first see the total load current......based on the load
current cable size is selected...

what is the internal working of star delta starter

0 Answers  

---

Give atleast 20 alternating current apparatus and devices.

0 Answers  

---

what is diffrence between MH LAMP and HELLOZEN LAMP

1 Answers  

---

Why DC excitation is used for alternators? Why cant it be AC?

35 Answers   ABB, Ace Info, Alstom, Shalivahana Power,

---

What is Diff btw Fire Alarm & VESDA System???

0 Answers   EFY, Emerson,

---

What is the function of Antipumping Relay and Lockout Relay?

1 Answers  

---

in shunt clippers why a resistor is used in sereis with the input

0 Answers  

---

what are the type of transformer?

4 Answers  

---

How Cable Size is determined for a Particular load.

4 Answers  

---

what is the easiest method of short circuit current calculation ? pls. derive with a mathematical example in real life application.

0 Answers   Mepax, NEPCO,

---

sigal phase supply is 230 v ac two phase supply is 415 v ac then why three phase supply having supply is 415 v ac why not 690v ac

2 Answers  

---

How to Select a Transformer Rating ?

3 Answers   Tata Steel Limited, Techno Electric and Engineering, Vedanta,

---