Fundamentals of Electrical Engineering I

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Current carrying capacities in amperes

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Rules for Classification and Construction Ship Technology (Electrical Installations)

Ship Technology   Rules for Classification and Construction   (Electrical Installations)   DOWNLOAD : http://www.gl-group.com/infoServices/rules/pdfs/gl_i-1-3_e.pdf     ...

Eaton Power Distribution Systems (ebook)

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ELECTRICAL ESTIMATION

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Electrical Thumb Rules

Current rating of Transformer / Generator (I)    KVA  X  1.4   Impedence of  Transformer  (Z)  5 %   Short circuit rating of Transformer    Current Rating / % Impedence  =  I / Z   No Load Current of Transformer < 2 % of rated current of Transformer   Impedence of Generator...

Electrical Engineering Thumb Rules

Earthing Resistance:   Earthing Resistance for Single Pit=5Ω ,Earthing Grid=0.5Ω As per NEC 1985 Earthing Resistance should be <5Ω. Voltage between Neutral and Earth <=2 Volts Resistance between Neutral and Earth <=1Ω Creepage Distance=18 to 22mm/KV (Moderate Polluted Air) or Creepage Distance=25 to 33mm/KV (Highly Polluted Air)   Minimum Bending...