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!
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.
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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
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Dave Plowman email@example.com London SW 12
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:
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.
"John Greenwood" wrote
| After finally finishing my new kitchen circuit I would like to check if
| 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
| 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.
describes a procedure
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