cpc

  1. J

    Replacement CU and no CPC on light cct.

    What is the current position with installing a replacement consumer unit, where there is no c.p.c. Can the existing cable remain according to the regulations, by placing a label at the C.U. warning against fitting metallic fittings?
  2. M

    Running in a new CPC

    Hi guys I was putting in a spur socket at a friend's house. when i noticed that the CPC is the metal cable trunking. I understand this is within regulations. However upon testing it had a high earth loop impedance and likewise r2. My question is, is it acceptable to run in a new CPC from...
  3. A

    No CPC in lighting circuits / Fire damage

    Good evening following a visual inspection in a property that had an electrical fire in the fuse board area obviously i could not actually test anything, but visually identified that the lighting circuits had no earth (not even cut back) now the insurance company ideally want a new...
  4. J

    UK Voltage in the cpc

    So had a call out last night to a house late night the lights had all tripped. Had 2 lighting circuits in one breaker one with a dead short on it and the other is fine. While i was there I also discovered there was 110v in one leg only of a cpc serving a final ring circuit but its not tripping...
  5. Amnesh Singh

    UK Using Armoured as CPC, how to carry R1+R2

    Can anyone please help me, HOW to Calculate R1+R2 on 4 core three phase & neutral SWA, Armour Steel Sheet is Used as CPC. How to fill the Electrical Installation Form. This scenario is in AM2 Inspection and testing filling Certs Exam? Please reply with best answers. Any members those who took...
  6. P

    Install downlights - No CPC

    I have been asked to give a quote to install some downlights in a kitchen, but there is no cpc in the light circuit. I appreciate the response by some is the world would end if I did that, but the circuit is RCD protected and the last IR readings on the ciruit were good when the board was...
  7. westward10

    No cpc, really.

    Done a periodic on this a few weeks ago and back now doing remedial. This notice and the previous Report state there are no cpcs through the lighting. None of the roses have a cpc connected but there is at the conduit boxes they are mounted on in fact I have checked every light and there is a...
  8. L

    Very High end to end on cpc ring

    Hello, Just getting ready for my first scheme assessment and am completing a board change to be assessed on. Ground floor ring end to end readings. Its a 2.5mm ring T+E r1 0.71 rn 0.72 r2 8564 I have had all of the sockets off to check for a loose connection. The property has over the...
  9. D

    Max Zs /ADS / shared CPC & N

    Hey Everyone. Whats your thoughts on using a 3core & earth to run x 2 final circuits? I have x1 three core & earth feeding contactors for emergency lighting. L1- fed from a 6A mcb is feeding a switched pole on a NO contactor, L2- fed from a different 6A mcb also feeding a pole on a NO...
  10. FatAlan

    Another..Replacing lost CPC?

    Ok, so there have been a number of threads on old lighting circuits with no CPC. Also noted that it’s a no no to borrow a route to earth from another circuit. In this scenario I have two lights atop of brick gate pillars. I have good continuity and sound IR between the two pillars along with a...
  11. B

    Broken CPC on Lighting Circuit

    First time posting so hope this is correct place? Been checking out a Customers Premises and all is good apart from 1 lighting circuit that feeds a bedroom and office. A CPC has been run but has been damaged/broken/cut somewhere en route to first light switch. (proved by using wander lead)...
  12. Sparky10

    Socket feeding DB

    Hi All, Visited a job today and was asked to supply and DB in a outbuilding via a Socket in the garden....:eek: i said i was not happy to do so and it wasn't possible. DB was suppose to feed 4 sockets 3 lights and a little plug in heater, Client claimed she was told by 3 previous electricians...
  13. HappyHippyDad

    Can I use the sheath of the SWA as the CPC in this example?

    Morning.. I have a garage fed by 4mm, 2 core SWA. It is a 25m run from the CU. Can I use the armour as the CPC? The Main house is TT. I have always used 3 core so have not come across this before. i am about to check my notes as I know I have information on this and will find the formula to...
  14. E

    Trunking CPC Continuity.

    Hi Guys, an old existing 25mm - TP & N SWA Supply cable is glanded (No Banjo) to a 3" Metal Trunking end cap, & the remainder of the circuit cables are contained in the same trunking forming the CPC back to the Distribution Board. With a method 2 continuity & an insulation test, can you be...
  15. D

    Volt reading across N and cpc

    I'm in a vineyard. There is a 300m buried SWA from the ccu direct to a 2 gang socket. I'm getting 247V across N and L at the ccu.... But at the socket I'm getting 100V across E and N and 147 across L and N. Continuity as a radial tested ok IR All over 500 M Please list possible issues here...
  16. B

    Testing pyro 2L2.5 cpc size

    When testing 2L2.5 & 2L4 pyro what size should be recorded for the cpc when using the outer sheath?
  17. Z

    Steel conduit used as CPC in flat, can’t find bonding, can’t find ring main CPC at C.U

    I’ve been asked to add a couple of extra points to the single ring main in a flat. Building fabric is concrete, all of the electrical installation is steel conduit buried in the concrete. I opened the consumer unit and could only see one CPC for a radial socket, as well as the main Earth. No...
    • ZEDEZ
    • Thread
    • bonding c.u conduit cpc flat lighting main ring ring main steel steel conduit used wired
    • Replies: 11
    • Forum: UK Electrical Forum
  18. Simon-0116

    Moving db with no cpc in lighting

    Replaced a db on a tt system, but moved it about 1m. All circuits were required on rcbo. So I've extended cables. Now one lighting circuit has no earth. Obliviousy I know existing it's ok to have no earth if class 2 fittings, relevant sticker notices in place. BUT because I've worked on...
  19. Z

    Question regarding signing off 32a ring circuit with broken CPC ring continuity

    I installed a kitchen ring recently. Went back to test after the builders had finished and found that the CPC is broken somewhere inaccessible, everything else tests normal. I’ve got continuity on live conductors, and even with the broken CPC, each socket is connected to the CPC and tests with...
    • ZEDEZ
    • Thread
    • 32a broken circuit continuity cpc off question regarding ring ring circuit signing
    • Replies: 46
    • Forum: UK Electrical Forum
  20. S

    NO cpc lighting 18th edition

    Went to fit new light fittings in a loft conversion today. The existing ceramic half moon uplights were installed using 2 core flex buried in the plaster going I know not where! I've come across 2 core systems in old peabody trust estates that where complient as long as double insulated fittings...
Best EV Chargers
Best EV Chargers by Electrical2Go! The official electric vehicle charger supplier.

OFFICIAL SPONSORS

Electrical Goods - Electrical Tools - Brand Names Electrician Courses Green Electrical Goods PCB Way Electrical Goods - Electrical Tools - Brand Names Pushfit Wire Connectors Electric Underfloor Heating Electrician Courses
These Official Forum Sponsors May Provide Discounts to Regular Forum Members - If you would like to sponsor us then CLICK HERE and post a thread with who you are, and we'll send you some stats etc

Advert

YOUR Unread Posts

Advert

TrueNAS JBOD Storage Server

UK Tiling Forum | Tilers Forums
UK Tiling Forum by Tilers Forums UK
Plumbers Forums | Plumbing Advice | Gas Forum
Electrician Tips from Professional Electricians
JBOD Forums: a forum for JBOD storage server advice
JBOD Suppliers: JBOD Storage Server Supplies
Back
Top