Answer / farzan danish

earthing resistanc should must be less than 1 ohm

Answer / nithya

generally electricl resisitance should be a 2 ohms. suppose
u are in a building the individual ohm is 1.2 ohm. and group
should be a 0.8 ohm.

I AM INTERESTED TO WIND A 3 PHASE MOTOR HOW I CALCULATE TURNS, PITCH,AND WIRE SIZE FROM STATOR DIMENTIONS

0 Answers  

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How to do maintenance of transformer feeder.

0 Answers   KSEB, L&T, Siemens,

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if we use contactor & MCCB both in a feeder.in this feeder rating of contactor is higher or lower or same of MCCB rating & why?

1 Answers  

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Why we apply 100ADC for contact resistance measurement?.If we apply AC what will happen

4 Answers  

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On a 6 KVA UPS we have to provide a DC MCB for Battery bank of 16 nos (12 V 42 AH). What Shall be the current rating of DC MCB ?

0 Answers   TNEB Tamil Nadu Electricity Board,

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What is C2-M2-E2 class in circuit breaker. why and where it is to be used in circuit breaker

1 Answers  

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what is the meaning of "i.p.-43" and duty cycle-s1 on the name plate of a asynchronous machine?

1 Answers  

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How you calculating the 30 Hp 3 phase AC motor of power what size of cable is used for this motor?

0 Answers   Dhanam Enterprises,

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star delta starter contorl circuit... drawing..

0 Answers  

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Draw the vector diagram and condition for the following: 1) Dyn1 2) Ynd0 3) YnYn0

0 Answers  

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Hi, I've just got into my electrical engineering course and I need some help with a question of mine here. During a site visit, we were shown a main LT panel which has switchgears, ammeters and different kinds of relays and the distribution network from that panel. In the main LT panel I've noted down the current readings as Ir - 163A, Iy - 150A and Ib - 147A. The Line to Line voltage is 415 V at 50 Hz and Line to Neutral voltage is 230V at 50 Hz. From the above details, how would I calculate the kVA rating of transformer? The primary side voltage of the transformer is 11 kV and the secondary side voltage is 415V and the frequency is 50 Hz.

2 Answers  

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what is the difference between ELCB and RCCB

5 Answers   Concorde, Hyundai,

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