in india single phase is 230v and three phase is 440v but in other countries single phase is 110v and three phase is 380v why..?

2 Answers  

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AC SUPPLY HAVING 230 V FREQUENCY REDUCED ZERO IF MEN TACUCHES THE SUPPLY WEATHER HE GETS SHOCK OR NOT?

8 Answers  

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What is the restart inhabit setting in ABB spam150c relay (Motor protection relay)

0 Answers  

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What's voltage?

1 Answers   Pakistan Atomic Energy Commission PAEC,

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Which circuit breaker arc quenching time is low AC or DC breaker?

1 Answers   Deltech,

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What is meant by system?

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What happen when switch yard one pole not tripe when you tripping the breaker

3 Answers   Adani,

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( Re: WHAT SHOULD BE THE RATING OF MCCB FOR 415V,3Ph,50KVAR CAPACITOR BANK Answer # 1 The capacitor current would be kvar x 1000 / (415 x sqrt3). This would be 70a approx. The MCCB selected should have *atleast 1.4 times this current i.e. 1.4 x 70= 98. So you should choose at least 100 A mccb.) regarding to this answer,i would like to know why the current have to times 1.4 to get the right amphere for the mccb.hows the formula to get the 1.4??tq

2 Answers  

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In oil transformer which oil is used & what should be the insulation resistance & heating capacity.

2 Answers  

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Thumb rule for capacitor bank calculation

1 Answers  

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how to minimize earth resistance upto 2Ω, if the resistance is 6 Ω ?

0 Answers  

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DRAW THE DIFFERENCE BETWEEN GROUND AND NEUTRAL IN BOTH SINGLE PHASE AND THREE PHASE?

2 Answers  

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