Answer / ganesan.n

Generally three earthings will be provided near the
transformer, they are namely:
1. Earthing for Lightining
arrester located at the pole structure,
2. Neutral Earthing,
3. Body Earthing

Answer / s naidu

Hear asking required for commissing the transformer
1-body earthing- 2nos
2-Neutral earthing-2nos
3-Lighting Arester for transformer protection
LA earthing-3 nos

Answer / somesh saran

1. 02 nos. body earthing
2. 02 nos. neutral earthing

Answer / easa paul

4 nos.(2 are for Body earthing and another 2 are for neutral earthing).

Answer / nazeer

one is neutral earthing and minimum two earthing for body
but if earth resistance is not below 2ohm additional
earthing has to be provide and make all link with each other

Answer / manoj kumar

total no of earthing is 5
where
lightining earthing
2 nos of boby earthing and neutral earthing

Answer / soma sekhar

1 Body earthing
2 Neutral earthing
3 Equipment earthing

Answer / prashant

there will be

body earthing - 2 nos

neutral earthing - 1 no

Answer / harnish desai

tehere are 3 nos. of earthing requres for comissioning of
x'mer.
1) body earth
2) neutraal earth &
3) lighting arrester earth.

Answer / mani0786

litening earting & must double body earting as rule IS 1956

In Swinburne's Test on D.C.machines, why the efficiency is more when the machine runs as generator than when it runs as motor???

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what is power factor?

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WHaT IS THE CONCEPT OF INDUCTION LAMPS IN MODERN LIGHTINGS, and HOW IT WORKS TO EMIT LIGHT ( AS NO ELECTRODES ARE PRESENT ) ?" COULD INDUCTION LAMPS CAUSE INTERFERENCE WITH COMUNICATIONS INTO A STORE USING INDUCTION LIGHTING ? WHAT IS THE BENEFIT OF USING THE LOW FREQENCY INDUCTION LAMP , VERSUS LED , AND VERSUS FLUORESCENT, AND VERSUS ANOTHER KIND OF LIGHTING . THANK yOU MOISES GUINDI

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how to calculate power

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Initially, when the input is not equal to the output — what type of response is this?

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why we decide alternating wave form in ac system and not in dc system

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what is diff kav & kvarh?

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how to save the power in company?

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I have carried out wiring for lighting in a shed in Industrial area which contains Metal halide lamps & have balanced in 3ph.Now when we put all the lines on in the daytime the current taken at 3phases at MCB comes to be equal i.e.28,29,28Amps respectively but in the night time i.e between 7p.m.to 11p.m. at the same MCb the current is 52,59,62Amp, though I have fit 63A MCB it is tripping in the above period.What may be the reason.? Note: This industry is located in industrial area where majority of steel ingot manufacturing plants are there. Whether this may be due to harmonic? what should I do to overcome above problem.pl suggest urgently.

4 Answers