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P

Peter Woodford

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Guys,

was wondering if you could help carried out a continuity test on R2 today on a ring circuit and was getting a open circuit. Tested R1 and got around 22 ohm connected R1 + R2 and got 46 ohm but the R2 is showing open circuit on its own. Have checked all sockets to see if there is a loose cable but nothing please help. Also did a RCD test on circuit and rcd tripped at 14.7 which is o.k so how is this going down to earth


Pete:mad:
 
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K

kung

  • Thread Starter Thread Starter
  • #2
Hello and welcome Peter
How are you taking R2 tests ? wander lead and screw on socket ? could have drylining box or plastic lugs if so
Regards
Kung.
 
S

Spudnik

  • Thread Starter Thread Starter
  • #3
Hi Peter and welcome..

R1 22 ohm? or .22ohm?

Makes a big difference.
 

old dog

-
Arms
Guys,

was wondering if you could help carried out a continuity test on R2 today on a ring circuit and was getting a open circuit. Tested R1 and got around 22 ohm connected R1 + R2 and got 46 ohm but the R2 is showing open circuit on its own. Have checked all sockets to see if there is a loose cable but nothing please help. Also did a RCD test on circuit and rcd tripped at 14.7 which is o.k so how is this going down to earth


Pete:mad:
when you say R2 rest are you talking end to end ?
is it twin & earth or singles in conduit ?
 
G

Guest123

  • Thread Starter Thread Starter
  • #5
Hey.

Have you checked your meter and leads on another circuit to make sure they're ok??

Sounds like a high resistance/open connection on the ring there somewhere, you havn't got a full loop but obviously there is an earth in the circuit because you have an R1+R2 reading albeit very high.
 
P

Peter Woodford

  • Thread Starter Thread Starter
  • #6
sorry 0.22 ohms doing end to end on ring circuit earth
 
hi pete
to confirm ring cont L-L 22ohms do you mean .22
cpc-cpc open circ
what was n-n.
when you tested r1 and r2 did you do figure of 8 live out with cpc in and live in and cpc out then check all points on ring
 
P

Peter Woodford

  • Thread Starter Thread Starter
  • #9
when you say R2 rest are you talking end to end ?
is it twin & earth or singles in conduit ?
yes end to end on twin and earth

cheers

hi pete
to confirm ring cont L-L 22ohms do you mean .22
cpc-cpc open circ
what was n-n.
when you tested r1 and r2 did you do figure of 8 live out with cpc in and live in and cpc out then check all points on ring

n-n was the same as L-L any ideas
 
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K

kung

  • Thread Starter Thread Starter
  • #10
Yes sounds like a break in cpc ! rcd test on each socket will still work down one leg.
 
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S

Spudnik

  • Thread Starter Thread Starter
  • #12
There must be a break somewhere but not necessarily behind a socket outlet.

As been said, best thing to do is split into 2 radials and follow it round till you find the part of the circuit that has the problem.

Not an easy task but reasonably easy to do.
 
P

Peter Woodford

  • Thread Starter Thread Starter
  • #13
Hey.

Have you checked your meter and leads on another circuit to make sure they're ok??

Sounds like a high resistance/open connection on the ring there somewhere, you havn't got a full loop but obviously there is an earth in the circuit because you have an R1+R2 reading albeit very high.

checked leads all O.K would this still pass on a cert


cheers
 
K

kung

  • Thread Starter Thread Starter
  • #14
R1 + R2 prob high as you have a break in the cpc ! dont matter about rcd test it still works down either cpc leg find break and your get better R1 + R2 reading.
 

old dog

-
Arms
hi peter its funny no reading on R2 but( R1+R2) = 0.48
caculation for 30 meters 0.58 so not far off you have cpc,s loose in a socket
thatsw if you have checked your meter is functioning properly
 

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