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
Lighting Circuit - Part 2
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="bnicholson" data-source="post: 28556" data-attributes="member: 1542"><p>Hi All, I am still workimg on tracking down a dodgy light fitting / cable in a house which has 10 plus rooms upstairs - 20 plus light fittings.</p><p></p><p>After a tough day in an attic trying to resolve the problem, I still have some questions that I do not know the answers:-</p><p></p><p>1. Apparently if I just Megger the cct I will find the short - I know how to carry out the IR test but I cannot understand how to use the findings to find the location of the short?</p><p></p><p>2. If you use a 100W bulb as a series limiter, it will help in the fault finding process - I seemed to have a problem in the Loop feed - why would the 100Watt bulb not blow as well?</p><p></p><p>3. If you disconnect the lighting cct half way round, this will help to isolate the fault. I struggled today to find the feed cable from the CU - it came up through a partition wall, nowhere near where expected!</p><p></p><p>4. If it had been downstairs lighting - how do you find out which light/rose/fitting is first in the radial?</p><p></p><p>I hope your feedback will also help others when trying to fault find in extremely large houses, or maybe it's just me struggling!</p><p></p><p>Regards</p><p></p><p>Bob N.</p></blockquote><p></p>
[QUOTE="bnicholson, post: 28556, member: 1542"] Hi All, I am still workimg on tracking down a dodgy light fitting / cable in a house which has 10 plus rooms upstairs - 20 plus light fittings. After a tough day in an attic trying to resolve the problem, I still have some questions that I do not know the answers:- 1. Apparently if I just Megger the cct I will find the short - I know how to carry out the IR test but I cannot understand how to use the findings to find the location of the short? 2. If you use a 100W bulb as a series limiter, it will help in the fault finding process - I seemed to have a problem in the Loop feed - why would the 100Watt bulb not blow as well? 3. If you disconnect the lighting cct half way round, this will help to isolate the fault. I struggled today to find the feed cable from the CU - it came up through a partition wall, nowhere near where expected! 4. If it had been downstairs lighting - how do you find out which light/rose/fitting is first in the radial? I hope your feedback will also help others when trying to fault find in extremely large houses, or maybe it's just me struggling! Regards Bob N. [/QUOTE]
Insert quotes…
Verification
Post reply
Main Forums
Do-It-Yourself (DIY) Question & Answer Forum
Lighting Circuit - Part 2
Top