what is the different between RCCB & ELCB

3 Answers  

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why we commonly use delta star winding in power and distribution transformers

7 Answers  

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What is expention fastener (Fan)

0 Answers  

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how on load transformer is chnage the Tapping ?

2 Answers  

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what is efficient load of transformer in percentage

4 Answers  

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meter ratio is 100/5 CT ratio is 125/5, when the ratios changes i.e., CT ratio is 125/5 meter ratio is 100/5 what is the MF in boths conditions?

1 Answers  

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what is the cost of a analog tachometer, for lab purpose/

0 Answers  

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how to calculate the size of cable for 100 kva load,?can somebody tell me with a formula

7 Answers   Apollo,

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What value of resistance required between Saftey earth and instrunment earth , maximum and minimum values required

1 Answers  

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TNC switch is also available in 1NO+1NC. What does it mean ?

1 Answers  

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Regarding units, for voltage we are denoting Volts as V but in case of current we are not denoting Ampere as A instead as I..Why..? Any technical reason for this..?

1 Answers  

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what is recovery voltage & transient voltage ?

1 Answers   Bhel,

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