concept of busbar and load dispatching..?

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What is formula calculation size cable wire ?

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what is photo voltic cell,& what are the materials associated with that?and any spcifications like volts/cm etc?

0 Answers  

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why plc need seprate earthing?

2 Answers   ABB, Whirlpool,

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Is the force acting between two parallel conductors of infinte length carrying AC of frequency 50Hz remians constant with respect of time? If not then what would be the frequency of the force acting?

1 Answers  

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i want to make an elec generater with only 12v car battery car alternater and 12 volt motor ..... will the battery charge and give power at same time with out over charging the battery?

1 Answers  

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why the power factor in inductive load is lagging while it is leading in capacitive load?

6 Answers  

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Is it possible to connect a safety device in to parallel?

0 Answers   Jones Lang LaSalle,

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During Testing of Maintenance Free Earthing, How deep should be the Spikes of Earth Test Meter should be inserted in the soil(one spike is 15 Meter & Other spike is 30 Mtrs away from the Main Earth Electrode. Because, recently, we observed that when spike is inserted 3-4 Inch in the earth- results are better, If spike is inserted 1 feet deep than results are increasing.

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UPS battery Back time = no.of Batteries * Ah of the Battery / output KVA * 130 ? what is the 130 means ? can any one help? because all are using this formula how its came 130?

2 Answers  

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total numbers of earthing of a transformer

1 Answers  

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how can we measure the import power and export power in the same line?

1 Answers  

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