Forums
New posts
Search forums
What's new
New posts
New media
New media comments
Latest activity
Media
New media
New comments
Search media
Members
Current visitors
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Main Forums
Do-It-Yourself (DIY) Question & Answer Forum
Underground fault - lost neutral
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Help Support Talk Electrician Forum:
This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
Message
<blockquote data-quote="UNG" data-source="post: 551673" data-attributes="member: 8931"><p>A neutral that has been broken between the substation and the premises would not cause an overvoltage and would probably and more likely cause a loss of supply on a single phase installation, whereas a loss of the earth reference to the substations transformer secondary windings centre point would cause the windings centre point and therefore the neutral to float at a varying voltage depending on the phase loads and in extreme circumstances the neutral voltage could be as high as the phase voltage giving 400v or more across the live and neutral terminals at the consumers installation. The highest phase to neutral voltage I have seen on an installation with a floating neutral was 385v and it made quite a mess of a lot of equipment</p></blockquote><p></p>
[QUOTE="UNG, post: 551673, member: 8931"] A neutral that has been broken between the substation and the premises would not cause an overvoltage and would probably and more likely cause a loss of supply on a single phase installation, whereas a loss of the earth reference to the substations transformer secondary windings centre point would cause the windings centre point and therefore the neutral to float at a varying voltage depending on the phase loads and in extreme circumstances the neutral voltage could be as high as the phase voltage giving 400v or more across the live and neutral terminals at the consumers installation. The highest phase to neutral voltage I have seen on an installation with a floating neutral was 385v and it made quite a mess of a lot of equipment [/QUOTE]
Insert quotes…
Verification
Post reply
Main Forums
Do-It-Yourself (DIY) Question & Answer Forum
Underground fault - lost neutral
Top