Answer / john

Earthing is done for the equipment and human safety where
grounding refers to the return path of the current in the
electrical circuit.

Answer / sraj

Earthing mins it is connected to dead parts like enclosure, machine body, base frame, etc. it does not carries current in under normal condition. used as a current path for fault condition, so it become safety for eqnt and human being.

Grounding is connected to live part. it gives return path for machine to power source. it carries current in normal condition. for example grounded star connected power transformer and star connected motor neutral.

Answer / k.prakashchandra

earthing is always grounding and grounding is not earthing
always.

Answer / raza

Earthing is the term which is first used by UK, where
grounding is the term which is first used by USA. There is
no difference between them.

what is difference between 5A and 100A CT constructional wise and operation?

1 Answers  

---

Why a transformer is rated in kVA and not in kW??

9 Answers  

---

What is maximum demand?How can we caluclate it?

3 Answers   TATA,

---

what are the steps involved in generator load test?

0 Answers  

---

what perpose of use CT ratio in gt,st,uat

1 Answers  

---

---

if the motor rated speed is 950rpm. how to change the above rated speed? is it possible?

0 Answers  

---

Can we pass 11kv power in 1.1kV voltage grade cable.If not why?.

3 Answers  

---

1.generator rated as 1000 mva,11kv .8 pf what will 0.8 pf will indicate? 1.max pf it can supply 2.min pf it can supply like this 4 options there what is answer.explain

5 Answers   Power Grid,

---

define power quality

1 Answers  

---

Dear sir, I am working in wind mill division , pls explain Pls explain in details with formula My question is Wind speed 3.5 M/s Gen RPM is 1500 ( 25 K/w Production ) Wind speed 12 M/s Gen RPM is 1500 ( 220 K/w Production ) Why in 3.5 m/s generation was low , why in 12 m/s generation was high , Pls dont explain wind force or wind density , that one already i know For the above question RPM was same why the KW was different Answer : 1. Its depends on the density ( Force ) of the air Sir , Pls explain wit Formula sir

1 Answers   Vestas,

---

what is different between IP55,IP54 and IP66?

2 Answers   ABB, Global Industries,

---

There are a trformer and an induction machine. Those two have the same supply. For which device the load current will be maximum? And why?

0 Answers  

---