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
size of tails
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="SPECIAL LOCATION" data-source="post: 19855" data-attributes="member: 250"><p>It doesn't say directly in the reg's you should have 25mm tails..</p><p></p><p>But on one of the relevant tables in Appendix 4 will tell you that 16mm cables are too small for 100amp..</p><p></p><p>The OSG makes an assumption that the MAX demand will be up to 100A..</p><p></p><p>the typical rating of your bog-standard CU main switch..</p><p></p><p>the old wylex board probably has a mains switch rated 80A or 60A?</p><p></p><p>IMO Its just a matter of providing for a worse case loading..</p><p></p><p>as you are quoting for both boards.. the cost of a couple of tails isn't going to break the job...</p><p></p><p>If I was doing it I would build in the costs &amp; swap the lot! <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink ;)" loading="lazy" data-shortname=";)" /> <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /> </p><p></p><p>then have a Guiness Drink:^O</p></blockquote><p></p>
[QUOTE="SPECIAL LOCATION, post: 19855, member: 250"] It doesn't say directly in the reg's you should have 25mm tails.. But on one of the relevant tables in Appendix 4 will tell you that 16mm cables are too small for 100amp.. The OSG makes an assumption that the MAX demand will be up to 100A.. the typical rating of your bog-standard CU main switch.. the old wylex board probably has a mains switch rated 80A or 60A? IMO Its just a matter of providing for a worse case loading.. as you are quoting for both boards.. the cost of a couple of tails isn't going to break the job... If I was doing it I would build in the costs & swap the lot! ;) :) then have a Guiness Drink:^O [/QUOTE]
Insert quotes…
Verification
Post reply
Main Forums
Do-It-Yourself (DIY) Question & Answer Forum
size of tails
Top