arrangement

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  1. C

    Earthing Arrangement (TN-S or TN-C-S or a Frankenstein Creation?)

    Evening Chaps As can be seen in the attached photo , the incoming supply cable has a Earth soldered to the outer sheath of the cable suggesting an TN-S Earthing Arrangement, however a Main Earthing Conductor can be seen coming from the supply head to the MET suggesting a TN-C-S Earthing...
  2. D

    TNCS or TNS earthing arrangement?

    Please can someone explain if this is a TNCS or a TNS earthing arrangement because it looks like both to me. Old undersized main bonding conductor goes into the neutral block first then to an earth block that's connected to the incoming cables sheath. My rather unhelpful supervisor told me to...
  3. B

    Earthing arrangement for shipping container on building site

    I’ve had a shipping container delivered to my building site for use as storage/utility room/worker toilet. One side is insulated as it was previously used for exactly this, and it already has some fairly rudimentary electrics installed. On the previous site, their “groundworker’s electrical...
  4. M

    What earthing arrangement would you use

    The situation is: Power is needed inside a greenhouse to power a specialized greenhouse heater, a timed motorized window opener and a light. The lights can be double insulated but the heater and windows device are both class 1. The greenhouse has a metal frame that is in good contact with...
  5. P

    What type of earthing arrangement is this ?

    Hi everyone, wonder if someone could help me out here, am I right in thinking this earthing arrangement is a TN-C-S ? I am just a bit confused by the earthing block on the side.. I am newly qualified domestic installer so just making sure it's what I think it is.
  6. B

    Earthing arrangement

    Hi Firstly apologies in advance. I am recently qualified ( a bit later in life) and well aware I require years of experience. I was doing work in a 2 bed second floor flat. I have always done a bit of very light electrical work and had my regs over the years so I know a little. I'm now further...
  7. B

    MVHR unit - condensate drain arrangement?

    I’ve purchased a single room unit to extract air from the bathroom, it will pass it through a heat exchanger and exhaust outside. In parallel, air is drawn from outside, through the heat exchanger and slightly warmed before vented through the ceiling of the landing/stairwell - there have been...
    • BrianHJR
    • Thread
    • arrangement condensate drain exchanger extractor heated mechanical mvhr recovery unit
    • Replies: 2
    • Forum: DIY Electrical Advice
  8. T

    UK Earthing Arrangement

    Can anyone help, i had a new combi boiler fitted last year and they used mainly plastic fittings to make there connections, i have attached a photo below my question is where should my 10mm earth bond go , the incoming water pipe is made of lead, do i simply bond the 10mm earth to the incoming...
  9. lozarus

    Klik Rose Arrangement

    Good afternoon - apologies if I'm overthinking this, but I was hoping I could put this out there for consideration. Scenario is as thus. Picture a small corridor, suspended ceiling with 6x 600x600 T8 fittings in the grid. 1x fitting is a maintained EML. All fittings are fed from Klik roses...
  10. I

    Earth arrangement photo

    Hi All, Could you please clear for me the air with earth arrangement I've encountered today. Had a minor electrical work moving sockets and went to check the supply. I can see two earth conductors there. One goes to service head which suggests it's tncs and another connecting to outer sheath of...
  11. D

    What is my Earthing Arrangement?

    Hi, I'm currently installing a new consumer unit and I cannot clearly identify my earthing arrangement. (image attached) I am leaning towards TN-S but could potentially be TN-C-S as it is a unit installed in the 70's and doesn't match the drawings in the OSG. Any expert advice would...
  12. D

    Earthing arrangement

    Is anyone able to clarify with me how i can work out what earthing arrangement i have on site. Supply comes into one of our motor switch rooms from an 11kv to LV transformer located directly outside. I can see 4 big copper bars (3phases and neutral) coming in which will then feed off to the...
  13. S

    Complicated dual tariff arrangement with four main switches.

    Hi Folks I'm used to (and understand reasonably well) simple dual tariff arrangements with two main switches (either two separate consumer units or a duplex). But I occasionally come across, and am now quoting for changing consumer units for a more complex arrangement that I don't full...
  14. cprfenom

    extending the earthing arrangement for a steel framed commercial building under 18th edition

    Hi Guys, This is my situation: Existing brick building demolished and replaced with steel frame, steel panel clad warehouse/storage structure. Original building had two electrical supplies: 1 x 63A single phase and neutral via 3 core PVC SWA PVC 1 x 100A TPN via 4 core PVC SWA PVC plus equal...
  15. J

    After some advise please- Tn-s earth arrangement

    Evening all, Just after some info on the photo attached. It’s a tn-s system with an Earth going to the cu met from under the floor boards. After lifting the boards I found the earth attached as so... I was expecting to see a clamp around the supply cable, not a choc block with legs of unknown...
  16. S

    Industrial Unit Earthing Arrangement - Lack of

    We’re in the process of replacing the 3 phase installation in our premises, the electrician that came said we should contact Western Power and request a PME, Western Power have said they can’t, we have also asked if they can supply a main earth terminal for us to connect to - they say they...
  17. P

    Earthing Arrangement

    Hello, Currently still studying at college. I seen this yesterday on a site. I asked the question but didn’t really get a good answer. I think this is tns. I see 2 10 mm on the left going to water and gas, 1 10mm going to the board. But where is the cpc coming from to connect back, I don’t...
  18. H

    SWA (Surprisingly Weird Arrangement)

    So I’m an inexperienced novice and I accept I know two ninths of four fifths of FA but when was this arrangement ever ok? Installing like for like replacement garden lights, currently connected to a run of 4 core 1.5mm SWA emerging from ducting under patio. Somewhere further back it’s joined...
  19. Nick Willder

    Mains domestic LED lamps on 3-way switch glow faintly in one 'off' arrangement

    On my landing are three connected lights. They have 230v LED bulbs. There are three switches - one obviously an intermediate switch. In one of the four 'off' arrangements of the switches, the LEDs glow faintly. Does anyone have a theory on where this current might be leaking to? Thanks.
  20. I

    General concepts - Automotive electrical

    Hi Forum, I have been reading up but cant get / find a definitive answer on this. firstly - I understand the purpose of a fuse is to to protect a circuit (shorting fires etc..) this is all good what I am having trouble finding/ grasping is the concept around fuses and power distribution. A...

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