Answer / wareagle

Explain in detail what ground free electricity is.

Answer / dheeraj

Grounding of large installation is necessary for earth fault detection and timely tripping of CBs. Without grounding hazardous potential may develop over the equipments which causes damage to the costly equipments.

Answer / kj

If you mean that we do not earth the neutral?

In a perfect situation this would be good and reduce the
risk of electric shock.

Unfortunately in real life it can only work in small
situations - using an isolation transformer for a handheld
light for example.

In large installations there is always a risk of failures
of insulation or machines. This would then cause a
connection of the neutral or phase to earth and therefore
it would no longer be ground free. The other thing is that
no insulation is perfect and there will always be leakage
with the same result.

if i have to use 14 kw what size of power cable can i use and size of earth cable also.

2 Answers  

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1 Answers   Toshiba,

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what is vA rating and class of a ct.

0 Answers   L&T,

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what is earth pit , how we can measured it, what earth rods reference

0 Answers   ups,

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How open delta used for protection?

4 Answers  

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I have an enquiry of develop solar power plant, 0.69/11kV, 1500kV/750/750kVA, Dy11y11 Transformer. I want to know what does 1500kV/750/750kVA means? Sorry if this is a noob question.

2 Answers  

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Could you measure voltage in series?

0 Answers  

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what is the difference between mho characteristics and quadrilateral chara in distance protection

1 Answers   Essar,

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how to flameproof electrical motor on the shaft?

0 Answers  

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Cables Construction hi friends, 0.6/1/1.2 kV LV , DC and Control cables are concentric copper conductor what does its means and what is the use of concentric copper conductor,and are this with copper tape shield or copper screening, ? thanks

0 Answers  

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I am having 120KVA UPS,which is connected to DG & normal power. What is the power drawn by this system when system is running on DG ????

2 Answers  

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I have a reading off 1.5ohms at my mem my main c/b is rated at 40/6 amps in a domestic house and i was told to change it to a b curve c/b is this ok

0 Answers  

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