why earth wire is needed in a wiring system

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if two transformers are parallel & both have fault short ckt. impedance of 50KA in each case will it increase or decrease show example?

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What is the difference between DOL starter and star delta starter

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Why we use 4-20 mA Analog signal for the PLC input? Why not 0-20 mA? Why not 5-25 mA?

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what is the method to calculate the voltage drop for number of meters Example 250volts I/p at one end if the cable length is 50 meters what could be the drop?, after 100 meters how much? needs formulae.

1 Answers  

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Advantage of earthing transformer

2 Answers   EID Parry,

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What is HVAC, PLS SEND DETAIL OF hvac.

6 Answers  

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i need to calulate the cable size when watts are mentaind wat z the formula

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What is phase angle? and what is importance to measure it?

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Dear Sir, we met a disaster with our 62.5 kva genset, after rewinding we informed by our contract engg that due to return current coming in neutral & impropper earthing this happend. But after all set up & load balance we checked & found again we have about 20 to 32 amp return current on neutral. we have 12 airconditioner + 12 mini fridge on single phase line. Pl suggest any idea to solved this problem

3 Answers  

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WHAT IS THE USAGE OF Buckoltz relay IN POWER TRANSFORMER AND AND HOW ITS FUNCTIONS?

3 Answers  

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what is difference between mccb,mcb,elcb,pccb

7 Answers  

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