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John Greenwood
 
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Default Testing ring circuit

Hello,

After finally finishing my new kitchen circuit I would like to check if the
continuity of live, neutral and earth to determine if they do indeed
complete a ring.

Searching on Google I have discovered continuity testing but with this it
seems you need to test each stage separately.

What I would like to do is to simply remove one socket cover, disconnect the
wires and test that each wire completes a ring.

Is this possible, if so what type of kit do I need to perform this. A
Screwfix link would be excellent!

Thanks,

John


  #2   Report Post  
BigWallop
 
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Default Testing ring circuit


"John Greenwood" wrote in message
...
Hello,

After finally finishing my new kitchen circuit I would like to check if

the
continuity of live, neutral and earth to determine if they do indeed
complete a ring.

Searching on Google I have discovered continuity testing but with this it
seems you need to test each stage separately.

What I would like to do is to simply remove one socket cover, disconnect

the
wires and test that each wire completes a ring.

Is this possible, if so what type of kit do I need to perform this. A
Screwfix link would be excellent!

Thanks,

John



Go to your Consumer Unit (main fuse box) and switch it off. Remove the two
red insulated cables from the breaker and connect your meter over them. Set
the meter to read the Ohms ranges and it you should have a reading of
between 3 and 10 Ohms depending on the length of the cables in the ring.
Repeat this for the black insulated cables and the earth connecting centres
and you should find out if all sockets are connected together.

If you don't get a drop in the Ohms range on any of these test, then you
have a break somewhere in the circuit and you'll need to test from each
socket to the next to find the break.

Hope this helps a bit.


---
www.basecuritysystems.no-ip.com
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  #3   Report Post  
BigWallop
 
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Default Testing ring circuit


"John Greenwood" wrote in message
...
Yes thanks this helps a lot, now I just need to know which type of meter

to
buy, is this one suitable:

http://www.screwfix.com/app/sfd/cat/...00153&id=14469

Thanks

John


Yes, this one is fine to do the tests you need to do. Remember to switch
OFF at the main switch before removing any of the cables from the fuses /
breakers, and remember that the big thick grey cables coming from the
electric meter are always live in the fuse box, so DON'T let anything touch
them.


"BigWallop" wrote in message
...

"John Greenwood" wrote in message
...
Hello,

After finally finishing my new kitchen circuit I would like to check

if
the
continuity of live, neutral and earth to determine if they do indeed
complete a ring.

Searching on Google I have discovered continuity testing but with this

it
seems you need to test each stage separately.

What I would like to do is to simply remove one socket cover,

disconnect
the
wires and test that each wire completes a ring.

Is this possible, if so what type of kit do I need to perform this. A
Screwfix link would be excellent!

Thanks,

John



Go to your Consumer Unit (main fuse box) and switch it off. Remove the

two
red insulated cables from the breaker and connect your meter over them.

Set
the meter to read the Ohms ranges and it you should have a reading of
between 3 and 10 Ohms depending on the length of the cables in the ring.
Repeat this for the black insulated cables and the earth connecting

centres
and you should find out if all sockets are connected together.

If you don't get a drop in the Ohms range on any of these test, then you
have a break somewhere in the circuit and you'll need to test from each
socket to the next to find the break.

Hope this helps a bit.


---
www.basecuritysystems.no-ip.com
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.505 / Virus Database: 302 - Release Date: 30/07/03






---
www.basecuritysystems.no-ip.com
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.505 / Virus Database: 302 - Release Date: 30/07/03


  #4   Report Post  
Dave Plowman
 
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Default Testing ring circuit

In article ,
John Greenwood wrote:
Yes thanks this helps a lot, now I just need to know which type of meter
to buy, is this one suitable:


It would, although is quite expensive if all you need is a basic DVM.
Maplin sell ones which will do this job for only a few pounds.

Also, if you go to eBay 'Test Equipment' you'll find a new DVM on offer
that also does temperature, which is very useful for balancing central
heating or checking ovens etc. They sell for about 15 quid, and IMHO are
good value.

--
*The more people I meet, the more I like my dog.

Dave Plowman London SW 12
RIP Acorn
  #5   Report Post  
John Greenwood
 
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Default Testing ring circuit

Thanks Big Wallop

"BigWallop" wrote in message
...

"John Greenwood" wrote in message
...
Yes thanks this helps a lot, now I just need to know which type of meter

to
buy, is this one suitable:

http://www.screwfix.com/app/sfd/cat/...00153&id=14469

Thanks

John


Yes, this one is fine to do the tests you need to do. Remember to switch
OFF at the main switch before removing any of the cables from the fuses /
breakers, and remember that the big thick grey cables coming from the
electric meter are always live in the fuse box, so DON'T let anything

touch
them.


"BigWallop" wrote in message
...

"John Greenwood" wrote in message
...
Hello,

After finally finishing my new kitchen circuit I would like to check

if
the
continuity of live, neutral and earth to determine if they do indeed
complete a ring.

Searching on Google I have discovered continuity testing but with

this
it
seems you need to test each stage separately.

What I would like to do is to simply remove one socket cover,

disconnect
the
wires and test that each wire completes a ring.

Is this possible, if so what type of kit do I need to perform this.

A
Screwfix link would be excellent!

Thanks,

John



Go to your Consumer Unit (main fuse box) and switch it off. Remove

the
two
red insulated cables from the breaker and connect your meter over

them.
Set
the meter to read the Ohms ranges and it you should have a reading of


between 3 and 10 Ohms depending on the length of the cables in the

ring.
Repeat this for the black insulated cables and the earth connecting

centres
and you should find out if all sockets are connected together.

If you don't get a drop in the Ohms range on any of these test, then

you
have a break somewhere in the circuit and you'll need to test from

each
socket to the next to find the break.

Hope this helps a bit.


---
www.basecuritysystems.no-ip.com
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.505 / Virus Database: 302 - Release Date: 30/07/03






---
www.basecuritysystems.no-ip.com
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.505 / Virus Database: 302 - Release Date: 30/07/03






  #6   Report Post  
Christian McArdle
 
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Default Testing ring circuit

Yes thanks this helps a lot, now I just need to know which type of
meter to buy, is this one suitable:

http://www.screwfix.com/app/sfd/cat/...00153&id=14469


Although this will give you an indication of the connection, it isn't
actually good enough for the regs. You'd need something more like:

http://www.tlc-direct.co.uk/Products/TM9054.html

These meters will apply up to 200mA to give a much more reliable indication
of resistance and will give 2 decimal places of ohms. Obviously, this isn't
the sort of price range you're looking for to test one circuit. To fully
test a circuit, you need one of these (which also does high voltage leakage
testing) an earth loop impedence tester and an RCD tester.

I wouldn't be surprised if you can hire from HSS, or you can just use a
multimeter and hope, but you won't have complied with the regulations. Last
I looked, the going rate on eBay was 50-100 for each digital meter.

Christian.




  #7   Report Post  
Owain
 
Posts: n/a
Default Testing ring circuit

"John Greenwood" wrote
| After finally finishing my new kitchen circuit I would like to check if
the
| continuity of live, neutral and earth to determine if they do indeed
| complete a ring.
| Searching on Google I have discovered continuity testing but with this it
| seems you need to test each stage separately.
| What I would like to do is to simply remove one socket cover, disconnect
the
| wires and test that each wire completes a ring.

As well as testing for ring continuity you have to check for inadvertent
bridging of the ring.

http://www.tlc-direct.co.uk/Book/8.4.2.htm

describes a procedure

Owain



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