Page 1 of 1
Adding a cpc
Posted: Tue Jul 24, 2007 5:01 pm
by I_spark
Hello,
If a lighting circuit has been installed without a cpc in the CU.
But everywhere else in every switch and light there is a cpc.
Would it be alright to add a 2.5mm cpc in the CU and runnit to any switch or light?
Because I tried it with a wonder lead and I am getting a Zs on the lights.
Thanks in advance.
Re: Adding a cpc
Posted: Tue Jul 24, 2007 10:51 pm
by BLAKEY1963
[quote="I_spark"]Hello,
If a lighting circuit has been installed without a cpc in the CU.
But everywhere else in every switch and light there is a cpc.
Would it be alright to add a 2.5mm cpc in the CU and runnit to any switch or light?
Because I tried it with a wonder lead and I am getting a Zs on the lights.
Thanks in advance.[/quote]
I SPARK
IS YOUR ZS READING WITHIN DISCONNECTION TIMES
OF YOUR PROTECTIVE DEVICE, PAGES 45 - 48 OF BS7671.?
BLAKEY1963
Posted: Wed Jul 25, 2007 12:19 am
by I_spark
yes
Posted: Wed Jul 25, 2007 9:33 pm
by BLAKEY1963
[quote="I_spark"]yes[/quote]
ISPARK
LOOK AT THE DIAGRAM OF DOC S PROJECTS AND STUDY
THE 3 CEILING ROSES AS IF THEY R YOUR LIGHTING CIRCUIT.
IF AS IN THE DIAGRAM YOUR LAST LIGHTING POINT IS NUMBER
3 FOR EXAMPLE , THEN YOU TRACE BACK FROM LAST LIGHT
BELLING THE EARTH AT EACH LIGHT UNTILL YOU LOCATE NO EARTH RETURN TO THE CU. AT THIS POINT U RUN 2.5 EARTH BACK TO
CU. OBVIOUSLY IN A IDEAL SET UP U SHOULD REWIRE WITH NEW 1.5 MM2 LIGHTING CABLE TWIN BROWN AND BLUE + EARTH. BUT I AM
SURE U R AWARE OF THAT.
BLAKEY1963