Forum Electric: Electrical forum, Electrical engineering, electrician, power plant, energetics,wires

stupid · Joined: 21 Sep 2006 Posts: 2

Why is that when we want to measure the Earth Leakage, we measured from the Netural Cable instead of the Earth Cable?

Please advice.

Lotzalife · Joined: 13 Nov 2006 Posts: 7

because that is where the potential goes to when electricity is used. The earth is just a backup ground.

Adam Miszczak · Age: 26 Joined: 19 Nov 2006 Posts: 1 Location: Poland

Earth leakage is a total current that "leaks" from line conductor to the earth, apart from receiver. It's a difference between current in phase and current in neutral conductor.

kaaud · Joined: 08 Feb 2007 Posts: 6

R u talking about 3ph or single ph,because there is a difference.

because there is no current flows in a balanced 3 phase load circuit,while the single phase I dont really know the answer,I just made a thread about that.

indil377 · Joined: 21 Jun 2007 Posts: 1

WFO · Joined: 21 Jan 2007 Posts: 19

It seems to me the measurement you are talking about would simply tell you how well your neutral was bonded to earth. The measurement could vary depending on the current flow in the neutral and how far you are from the point that they are bonded.

Define what you mean by "leakage"?

MB · Posted: 2008-04-20, 11:05