why do we need to use 3c+3e cable, normally i select only 3c+e cable and i think it is enough. pls explain the usefull of 3e cable ( in this project the earthing system is well done)

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Instead of single phase(220), if apply Phase to phase supply (eg: for lighting fixture). what will be the power formula? what will be the volt and current value? please explain me with some example.

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in the directional overcurrent and earthfault protection,normally we are setting the angle 45 deg lead for phase fault overcurrent and -45 deg lead for earthfault fro forward direction.but both the fault are operating on the same angle region only.why?how the relay will response?

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what is the relation between currebt & voltage.

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I want the details about BHEL company examination.Can anyone able to help me please.

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can i connect the two phases of scott connected transformer,if not why?

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Why are lt windings placed near the core?

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How many types of colling system it trformers?

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how to store the thunder power?

1 Answers   Voltech,

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If a Power Transformer Fails and the transformer manufacturer suggest that "Do all electrical test on the transformer?". What are the test to be conducted in this condition?

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How to calculate rated currennt Of Mcb for 2hp motor...

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when voltage increases current decreases & vice versa why it is so?

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