Answer / raju

Cable tray size must be double of the cable diameter.for
example, three cables(4c/95sqmm,4c/70sqmm,4c/50sqmm)are
traveling in a corridor,...the diameter of
95sqmm-41.7mm,70sqmm-37.7,50sqmm-32. then the total diameter
of the cables are 111.4. for this total diameter, the size
of the cable tray should be double of the total
diameter,.i.e 225mm cable tray can be use.

What is meant by RCCB

3 Answers  

---

What is the diffrence between an ELCB(earth leakage circuit breaker) and RCCB(residual current circuit breaker)?which has higher degree of safety and why?

2 Answers  

---

CFL lamp is what type of load?

6 Answers  

---

describe the Tranformer testing procedure

0 Answers  

---

Which Current transformer will be bigger in size, 400/5 or 400/1 & why?

2 Answers   Apollo,

---

what is meant by re-rolling motor? how it differs from standard motor?

0 Answers  

---

how to calculate the mf of kwh meter,if ct the ratio on meter is 100/5A

2 Answers  

---

How to Measure A.C Resistance for Earthing ?

2 Answers  

---

how to maintain frenquncy with syncronising sub-station for distribution

0 Answers   Suzlon,

---

What is the meaning of BUS?

20 Answers   CII, KLG Systel,

---

What are the advantages and disadvantages of short-pitched winding?

0 Answers  

---

What are hrc fuses and where it is used?

0 Answers  

---