Answer / koti

It is not minimum but maximum which is less than 1 ohm.

Answer / jithendra

static earthing is to be below 2 ohms.
plc & transformer neutral earthing is to be below 1 ohm.

lighting earthing will also come under static earthing

Answer / kanhaikumar

25 ohms

What are the various methods for effecive earthing in a factory in a rocky terrain, where soil resistivity is extraordinarily high? The usual method of 3 m deep earth pits is not serving the purpose.

4 Answers  

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In the diesel generator wihch type of power we can get it ? Like AC / DC

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how much earthings are provided for 22KV HT Metering Kiosk

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how to calculate the size of cable tray

3 Answers  

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advantage of cu cable over al cable

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Is C.T will sense the current in both direction. As i know the C.T will sense the current in only one direction.

2 Answers  

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How to use a insulation resistance tester on a three phase electric motor?

2 Answers  

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What is cathode ray oscilloscope (cro)?

0 Answers  

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I am getting above 60 V as open delta voltage against single phase unit ICT at tertiary delta formed and ICT getting trippped on NDR. ICT tested and found in order. PTs provided on tertiary are tested and in order. what may be the reason?

0 Answers  

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transformer test

4 Answers  

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what are the types of electromagnetic forces developed in practical transformer?

0 Answers   APC, BPCL Bharat Petroleum, Electrical Tech,

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