Hi guys,Ive got my 2330 level 3 testing exam coming up on Monday. Quick question, would someone explain to me how to do the figure of 8 ring circuit test?
Am i correct in thinking you link -
Live on cable 1 to neutral on cable 2
Neutral on cable 1 to live on cable 2
Thanks for your help, Russ
Hello Russ9898...
welcome sir. (thats me posh telephone answering voice.. bit like the sort of thing your mom does when she picks up the phone! ; \
)
You are absolutely correct in your thinking.
Obviously you would do a quick check to verify individual continuity of each of the Live & Neutral legs around the ring first..
otherwise you are bolloxd ! :_|
Then by crossing the wires as you describe..
You actually construct a continual loop of copper conductor with the same cross sectional area along its entire length.
Because it is now one continual loop measuring continuity across Live and Neutral at ANY point in the ring
The values will be substantially the same. i.e. all sockets = each other AND at the CU.
The value should be approx one quarter of resistance of Phase & Neutral. i.e. (r1 + rn)/4.
If there are any spurs the reading will be higher.
But if there are any bridges across the ring, making a figure of "8"
then the values will vary considerably dependant upon which part of the figure "8" the socket you test at is in.!
Best of luck with the exam m8!
Think thats all come out as my brain was thinking it....
but it is getting late!!
? :|