×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

overlapping vs. switching neutrals

overlapping vs. switching neutrals

overlapping vs. switching neutrals

(OP)
In a automatic transfer switch application, the generator is a seperately dervied system at 480V. The transfer switch installed is a 4 pole with an overlapping neutral.

Questions:

1. Can an overlapping neutal be used with a separately derived system where overlapping is only momentarily (make before break)

2. What are the pros and cons of using swicthing vs. overlapping.

RE: overlapping vs. switching neutrals

Overlapping "is" part of the switching, where it momentarily overlaps but source of neural gets switched. There is no difference between the two.

Or in other words when a neutral is 'switched' it is always done via overlapping neutral. This is to avoid system being left without grounding even for a moment.



Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources