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Discuss Testing.. Never goes right.. in the Periodic Inspection Reporting & Certification area at ElectriciansForums.net

T

TPES

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Practicing again...

TN-CS Supply New Built Home

Tested ring final circuit..

P - 0.34
N - 0.34
CPC - 0.59
________________________________________________

N1 - P2 = 0.70

N1 - P2
P1 - N2 = 0.16

P - N Sockets..
1- 0.19
2- 0.16
3- 0.17
4- 0.17
5- 0.18
6- 0.16
7- 0.21
8-
9- 0.18
________________________________________________

P1 - CPC2 = 0.95

CPC1 - P2
P1 - CPC2 = 0.21

P-CPC...
1- 0.23
2- 0.22
3- 0.26
4- 0.22
5- 0.23
6- 0.30 ? Why the high readings on socket 6/7/9..?? really annoys me.. No test i do ever goes right.
7- 0.36 ?
8-
9- 0.30
________________________________________________

Socket "8" was not accessible.. What do you do about this.. What would you write about this on Cert?
________________________________________________

Ze = 0.21
PFC = 1.23 kA
________________________________________________

IR Test..

L-N >1000
L-E >1000
N -E >1000
________________________________________________

Does all look ok ???​
 

scotsparky

-
Arms
Are 6,7,9, the furthest away pints sometimes you can get variation but i would think if variation were over 0.05ohms
 
S

Spudnik

  • Thread Starter Thread Starter
  • #5
Looks ok to me.

Its usually the case that the higher readings are normally spurs.

Should have similar readings wherever on the RFC.

How come socket 8 was not accessible?

Still, a note on the cert wont hurt.
 
Last edited by a moderator:
S

sparkswillfly

  • Thread Starter Thread Starter
  • #6
make sur youve got your out going line to incoming neutral and viser verser
 
Your to keen!!!!!! If you have not wired it .... it's not your problem !!!!!!
Are ELI readings at each socket within limits ?
With it being new build !!!! These readings don't matter....If the Rcd trip times are within range at each outlet....... if you read the contradicting ECA guide to the Regs
 
G

Guest123

  • Thread Starter Thread Starter
  • #8
Just because a circuit has RCD protection it does not negate the need for max permitted Zs values to be met.

There seems to be a bit of a culture brewing that if theres an RCD on the circuit then forget about the Zs, not the case in my book.
 
S

Spudnik

  • Thread Starter Thread Starter
  • #9
Agreed Len,

RCD's should ONLY be used if max disconnections times cannot be met, not instead of.

Obviously except in the case of TT's.
 
T

TPES

  • Thread Starter Thread Starter
  • #10
I know i am very keen, and this is sad i suppose but lately all i can think about is testing.. and all the tests and results.

This is why its frustrating me when im getting readdings off like this..
would you all be investigating these slightly higher readings on sockets 6/7/9 or just put down your R1+R2 as 0.36 being the highest. (even though the readings are out the 0.05 limit between sockets)
 
S

sparkswillfly

  • Thread Starter Thread Starter
  • #11
are you using a plug in tester ,if so use the probes were the cables terminate the sockets as the tightness of the plug can varrie from socket to socket
 
T

TPES

  • Thread Starter Thread Starter
  • #12
are you using a plug in tester ,if so use the probes were the cables terminate the sockets as the tightness of the plug can varrie from socket to socket

So you suggest to take the socket off and test with the probes on terminations not the (R1+R2) socket tester?
 
S

Spudnik

  • Thread Starter Thread Starter
  • #13
Ideally yes, because sometimes contacts in the sockets wear etc and can give odd readings.

Shoving the plug in and out a few times may help.

Would be interesting to see your results with the 3 wire method.
 
sid
you will find as you do more testing that the readings often vary a little from what you would expect its a case of learning what is an acceptable difference not every circ will be spot on by the book
 
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