Jump to content
Electronics-Lab.com Community

Neutral , ground & earth


electrosimonics
 Share

Recommended Posts

Hi electrosimonics

to best of what i could recollect

NEUTRAL is used for public mains supply, either single phase (Live & neutral) or three phase Star connection ,4th wire being neutral. the concerned electrical supply companies general connect the neutral to ground at the point of thier distribution stepdown Transformer' output. It need not essentially be at earth potential by the time it reaches the user premises, but will be near to ground

Ground and earth are similar words-- i saw the term ground being used in American documentation especially.

sarma

Link to comment
Share on other sites

"Ground" and "Earth" are actually two different things, but can be at the same potential. In other words, the ground of your circuit does not have to be connected to earth ground, which is the potential of the return or ground of the mains in your service box on the house. This is always at Earth Ground because it is connected to a rod that is driven into the ground. There are many situations where your chassis ground or case ground on the instrument would not be at the same potential as earth. There are also instances where you want a different supply ground or circuit ground than the earth ground or the chassis ground. Thus terms such as chassis ground and common come into play. When these potentials are different, the schematic will use different symbols to denote zero volts, common, analog ground, digital ground, chassis ground, and earth ground. Using different symbols to sort these out keeps this from getting too confusing.

MP

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
 Share

×
  • Create New...