Answer / mk

In Three phase supply ,phases are 120 deg appart and act as ref against each other .for single phase application, neutral which is commen point of phases is ref.ref is essential.ground pt is for safety where leakage current if any will pass to gnd.

Answer / naresh

ground wire is where you connect diff equipment to control their potential diff at one level.this applicable to only body parts only. like a generator where engine , alternator , radiator connect with a wire to control their potential generating due to rotetion of generating set.
and eath wire is the wire which connect between body to earth point of earth pit to control potential of equipment.
this point also imp. to human and machine safety

the fuse is use for protection against overcurrent but at normal condition it carry the rated current then how single thin wire carry this current without melting

1 Answers  

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What is shunt voltage and u v voltage witch one best

0 Answers   SEL,

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Is there any standard guidelines/Criteria to design NGR/NGT.?

0 Answers  

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which site/city in India has all three(thremal,Hydal and Nuclear)power generaton facilities?

2 Answers  

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Why 11KV/440V distribution supply use for Domestic use?

3 Answers   Essar, Getco, Nissan,

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How to decide whether A / B / C / D curve type MCB should be used?

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What is meant by single line diagram?

2 Answers  

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difference between temperature sensor and temperature switch

3 Answers   ABB,

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Dear sir/mam Iwant complete details of Naintenence of 33kv/433v Transformer having 1250 KVa

1 Answers  

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why the supply frequency in india is 50hz?

2 Answers  

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1. Design a counter which counts 0, 4, 8, 2, 6, and repeats using: 1.a using JK flip flops 1.b using T flip flops 1.c using D flip flops

0 Answers  

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when the supply of MSEB is cut off & all the load of the industry is driven on generator at that time the capacitor which is connected in industry for power factor control is switched off why?

1 Answers  

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