Answer / maddoxx

neutral in sigle phase line is the return path which is normally(off ckt) at 0 v.grounding is done for protection and current flows only during fault.Grounding is done basically on the non current carrying part of the device or system so if there is failure of insulation in motor or device the current also flows in chesis of device. so if we do grounding it flows impedance path) to ground(earth).and thereby protecting device from higher current.
in 3 phase line neutral has no current in balanced cond'n.But has in unbalanced.so this extra current can be bypass by connecting neutral to ground or to the supply neutral(which is also grounded).
"SO NEUTRAL IS A RETURN PATH(1 PHASE) AND GROUNDING IS A BYPASS PATH IN FAULT CONDITION ONLY"

can anibody tel me on what basis the transformer vector groups are determined????

1 Answers  

---

how to calculate cable size in diffrent loads?

0 Answers   ABB, Sterling,

---

WHY IS CT SECONDARY SHORTED TOWRDS TH EQUIPMENT TO BE PROTECTED

1 Answers  

---

How many types Switchgears?

4 Answers  

---

How to connect the chemical earthing and complete process tell me plz

0 Answers  

---

Why we make earth connection with Transformer Body and What will be the minimum size of copper wire as per code with respect to KVA rating of Transformer?

0 Answers  

---

what is over cureent protection

3 Answers   Anil Group, MPSEB,

---

how do the stepper motor works.

1 Answers   Vardhman,

---

why battery is connected in series?

10 Answers   HP,

---

Why we are putting off the APFC(automatic power factor control) panel while the generator is running?

4 Answers   National Steel,

---

why dc source used for HV breakers and Relays operation?

2 Answers   Cethar,

---

What should be the minimum and maximum ohmic value for earthing?

2 Answers  

---