Consumer Fuse Query

Page 1 of 2  
We are about to move house and one of the things that came up one the survey was the wiring was in a shocking state. We went round for another look today and sure enough it is.
On contacting the supplier, the advice I got was that they don't care if I pull the consumer fuse (to facilitate a re-wiring) but they'll need a cert. of conformity from a spark to replace the seals (fair enough).
However, the consumer fuse is not like one I've come across before.
A picture of the meter board can be found here:
http://www.chrisj.dsl.pipex.com /
Can anyone give any clues to the configuration?
All the consumer fuses I have seen have had a single seal. Also what is the black wire coming out of the top of the earth terminal likely to be?
I didn't post make a picture of the consumer unit available as I didn't want to scare anyone.
Chris.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
"Chris" wrote | However, the consumer fuse is not like one I've come across before. | A picture of the meter board can be found here: | http://www.chrisj.dsl.pipex.com / | Can anyone give any clues to the configuration? | All the consumer fuses I have seen have had a single seal.
That's perfectly normal. The left 3 sealed compartments are the phases, for a 3-phase incomer. Only one (red) is used in this single phase installation, the one on the right (black) is the neutral.
| Also what is the black wire coming out of the top of the earth terminal | likely to be?
An earth to something...?
| I didn't post make a picture of the consumer unit available as I | didn't want to scare anyone.
Oh, please do!
Owain
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
On Thu, 13 Nov 2003 20:58:23 -0000, "Owain"

Seeing as you said please...... same URL (give it a few hours before it becomes available).
Chris
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
"Chris" wrote | >| I didn't post make a picture of the consumer unit available | >| as I didn't want to scare anyone. | >Oh, please do! | Seeing as you said please...... same URL (give it a few hours before | it becomes available).
http://www.chrisj.dsl.pipex.com/index_files/image004.jpg
I think that's where your enigma black earth wire goes :-)
I've seen worse. Far, far worse. It's when the fuse boxes are wood and the main switch is 2 5A tumbler switches with the dollies linked by a bar, then you know you've got an antiquity on your hands.
Owain
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Yes, I think I agree. If that was clean and straight I don't think most people would bat an eyelid.
--
Chris Green ( snipped-for-privacy@x-1.net)

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
wrote:

for
installation,
It's not that bad actually. I've seen worse. You've got an easy job there mate. :-))
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
On Fri, 14 Nov 2003 19:04:41 GMT, "BigWallop"

I'm looking forward to it actually, we have been moving house for what seems like ages (it's taken longer than expected as there was a baby in the middle). I've been starved of any real DIY for months since we got our house ready to put on the market.
It's sometimes nice to have a 'blank canvass' to go at.
Many thanks for the advice.
Chris
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
Chris wrote:

You have a three phase supply with a single phase meter attached. Not a problem. Just pull the right hand fuse. The one in line with the red wire feeding the meter.
When you have re-wired just bung the fuse back in. The meter readers are the only ones to see it and they are often contracted out readers and won't be at all concerned if there is a seal missing. My board fuse was unsealed for years (1982 til 2001). When leccy board came to fit a new meter a couple of years ago I asked the chap to fit a seal which he did without a query.
Good Luck
Bob
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
On Thu, 13 Nov 2003 21:10:56 +0000, Bob Minchin

<SNIP>
Thanks Bob. Will anyone be unduly upset if I remove the lower seal on the meter to replace the tails? (If required)
The consumer unit is a museum piece and the tails aren't well routed.
Also, i'm assuming that it's ok that the are a pair of tails from the meter. One (going off to the left) is the main CU and the off to right is a secondary CU (not sure for what yet, probably either an immersion or the garage). Would it be better to split this via a Henley block instead?
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
Chris wrote:

I really dont think anyone will worry about missing seals.I remove all when I re-wired in1982. I shortened the overhead cable, moved the meter from the wall in the hall to the garage, added an isolation switch and put the CUs upstairs in a 'mission control' walk-in cupboard.
Good idea to put the henley block in possibly leaving a spare way for even further expansion. They might get a bit excitable if the henley block is before the meter !!
Good luck
Bob
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
On Thu, 13 Nov 2003 22:19:19 +0000, Bob Minchin

When you talk of an isolation switch, I presume you mean a 100A double pole DIN mounting type in a 2 way enclosure?
Chris
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Just call up the electric co. and ask them to do a check for safety / fit isolator... they`ll replace the tails for you, and should provide a double pole isolator so you can switch off your side of the installation.
The tatty tails to the meter are the responsibility of the electric co. (you have no "official" access to them as they`re sealed, so they should do it) - free of charge of course.
--
Please add "[newsgroup]" in the subject of any personal replies via email
* old email address "btiruseless" abandoned due to worm-generated spam *
  Click to see the full signature.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
wrote:

Definitely a Henley block. Had a similar problem just this week. Supplier came to change a 3 ph meter with 2 sets of tails. Engineer said it was against regulations. Fitted Henley blocks so that only one set of tails was connected to the meter. Nic.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
wrote:

As a matter of interest, would there be any advantage in pulling the neutral fuse as well? Is there any circumstance where this would be safer/less safe?
--
Bob Eager
rde at tavi.co.uk
  Click to see the full signature.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Neutrals can have isolating switches (ganged with the live side) but never fuses
Broken neutral is (thinks hard) probably the worst fault you can have
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Old iron clad "isco" cutouts (amongst others) had a fused neutral.
--
Please add "[newsgroup]" in the subject of any personal replies via email
* old email address "btiruseless" abandoned due to worm-generated spam *
  Click to see the full signature.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

I know - SEC had a laugh a few years back when they took ours out must have weighed as much as me
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

The system head is a three phase looped supply. The black wire coming from the top is the neutral connection from the supply.
There are two separate systems connected from the consumer side of the meter, hence the grey double insulated cables heading off to the right of the picture and then the other red and black ones which go off to the left and then upward. Both are from the consumer side of the meter.
The meter is only connected to one consumer fuse on the right hand side of the three phase head and is only sealed by one tag, so this would be the one you'd pull out when you go ahead with your rewire.
The earthing bonds are provided into the bottom of the white box on the right hand side of the supply head and the main connections have be taken to the steel armour of the mains supply cables. The consumer side earth bonding is provided by the green/yellow cables coming the top terminals of the white box.
Any clearer ?
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
On Thu, 13 Nov 2003 21:27:42 GMT, "BigWallop"

<SNIP>
No, that's great thanks. Never encountered a three phase head before.
Thanks for the help.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
On Thu, 13 Nov 2003 21:27:42 GMT, "BigWallop"

<SNIP>
It was the black wire coming from the top of the white earth connection block I was in doubt about. Any ideas?
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Related Threads

    HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.