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  

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what is transformer

5 Answers   Aegis,

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hi sir i have load of 17.5kw in 3 phase lighting circuit which mcb i can use

3 Answers  

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What is the suitable rating of MCB for 1.5 Ton A.C and why? 1Ton= how many amperes?

5 Answers   BARC,

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i need 24v dc from 230v ac supply how we can getit ? what are the devices &its rating requied for that ? plzz i need answer urgently .thank u

3 Answers  

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how to calculate magnetic force genrated by a coil ?

0 Answers   L&T,

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what is ups Paralleling? how is load sharing at that time ? what are the things we have to note that time?

1 Answers  

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Can anybody tell me how to calculate(formula) earth flat size(for copper and aluminium).

3 Answers  

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Whether we used insulated line for 33KV supply. what we called it.

1 Answers  

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What is meant by impedance? difference between high & low impedance ?

0 Answers  

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What is line resistance of cable & how it can be measured ?

0 Answers  

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Is there such a frequency as 440v 50Hz?

1 Answers  

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