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  1. T

    RCD Tripping, Nothing in Sockets, no load... what now?

    Hi Everybody, We just moved into a detached house in last friday, only to find that the RCD keeps tripping for no reason :S I have had an electrician out who checked the RCD and said the box is fine.. and must be the sockets. We unplugged every item in the house and tried to turn the socket...
  2. K

    Metal Halide lighting

    Hi all, I posted this earlier under a different title and unfortunately didn't get any response. So apologies if you have already seen this. I need to design light solution for public hall, which is current lit using 35 x 60W Par lamps and this is not sufficient. I was considering metal...
  3. H

    What's this object?

    Hi all - Showing my ignorance/lack of experience here. I presume the main fuse for this system lurks inside the bulbous green box which has a seal on it. I need to pull the fuse to do some work on the system. There appears to be black slime oozing from this contraption. Any advice on how I...
  4. E

    wireing in a loft

    Having to deal with a complaint, that a tennents house has recently been rewired and their not happy with the cables in the loft just laying under the insulation. now im sure when any of us do a rewire only sometimes do we clip them, but this persons saying they should be protected by conduit or...
  5. R

    Contactor Question.

    Can you get contactors that switch between different poles? Like a 2-way lightswitch. I know you relays are availible, but I can't find any contactor? Thanks :)
  6. L

    Sub-mains earthing question

    I’ve recently run a supply to a garage and I had a question concerning the earthing. Here is the situation: TT supply to house. Supply goes into a time-delay 100mA RCD before it splits. This then goes through a sub-mains isolator at the house. 3-core SWA runs about 60 metres to garage. 17th...
  7. E

    Does advertiseing on google work???

    Hi all Im currently advertising on the front page of google for a fee of a website company, but im still not getting any calls they are telling me its my website and want me to pay them to make it look better but i think it does the job and do not want to pay anymore.Has anyone advertised on...
  8. O

    FLUKE 1653B Serial Number

    I have just used a new FLUKE 1653B for the first time. No problems with the kit, but I have just come to complete the the test schedule and I cant fine the machine serial number anywhere. Am I missing something simple. I would have expected to have found it on the case or within the battery...
  9. K

    building

    Hi, I am currently in the process of designing lighting installation for a church hall, and am trying to come up with an economical and practical solution to fulfil these requirements Client wants dimmerable energy efficient solution, with surface mounted / track lighting. Current lighting...
  10. A

    Ex army plumber needs part p and 17th

    Hi all I am a member of the plumbers forum but after some electrical advice. I have had a read of the sticky ex forces thread, very useful. I am looking to do Part P and 17th edition this year using my army funding so that i can do the electrical side of any plumbing jobs I get. What...
  11. I

    Acronyms

    I dip into this forum to expand my knowledge base and sometimes for amusement but I am rapidly getting to a point where I just can't be bothered reading threads with groups of letters that mean nothing to me. Would it be possible to have a Moderator controlled Sticky post with all the recognised...
  12. S

    Ancient Fusebox, old CU & Cable Problem

    Hello AllI am looking for some advice, my girlfriends CU needs to be replaced and removed.She had two extra rooms fitted to the apartment (which converted an old hallway into part bathroom), and her electrics have been left in a sorry state. Currently choc-blocked to death, even on the CU.Its...
  13. B

    Working out resistor calculations...

    Late at night....tearing my hair out....need help with working out resistor calcs. 230V supply....R1=70...R2=90 What is the value of a resistor which when connected in parallel with 70 ohm resistor will cause a total current of 2.4 amps to flow in the circuit? any guidence to push me in the...
  14. D

    IR test results.

    Hi guys, Tested my new kitchen circuit today, all results as expected for a new RFC except the IR between line and earth. The resistance between line and neutral and neutral and earth is >1000 MOhms as expected, but between line and earth it's in the region of 3 MOhms. After disconnecting...
  15. A

    Outside light

    A collegue at work has asked about having a PIR light added. Not sure if im allowed to do it but said that i would have a look into it. The Consumer unit has no RCD and is the old wylex unit that is found in so many authority houses (meteral i think / skelton type) my thoughts would be to take...
  16. Rockingit

    When PME is NOT recommended.....why??

    Something that's always bugged me, and I've never fully understood WHY (just know that's it what the regs say) is why certain installations are prohibited from using TN earthing, only TT (caravan sites etc etc). Anyone care to enlighten me?
  17. S

    Do I need to add RCD protection

    Right, the situation is I'm changing some faulty 12volt transformers for some downlights in a kitchen. The lighting circuit is not RCD protected. Now, I know that the switch wires are buried in plaster less than 50mm from the surface. Because I've worked on this circuit and have to issue a minor...
  18. R

    Showing cable drops on building diagram.

    I am doing my D&V course and need a way to show where cables drop from the ceiling down to plug sockets etc. It is a standard 2D overhead diagram show the different rooms etc. Thanks :)
  19. S

    Am I qualified?

    I have just done a garage conversion and was wondering if I can sign off electrical test sheets myself to obtain a completion certificate. I am an electrician who has been working on the rigs and overseas for the last 5/6 years. I have not held a JIB card for god knows how long although I did...
  20. 0

    Stair lift installation. It keeps happening.

    And so it begins. Called to an elderly couple. Stair lift and bed hoist not working properly. The old lady is bed ridden. Simple solution....there had been a power cut and just needed resetting. BUT thought i would have a look at the installation. 2.5mm radials spurred off the nearest...

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