cable

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  1. S

    SWA/SY cable in a fibre duct

    OK. I can already feel the eyes rolling I am working in a yard where we are having trouble with vandalism. There is absolutely no way of getting a cable (easily) down the to front gate, as the perimeter is hedging and the car park is concreted entirely. The ONLY duct to the gate from the...
  2. M

    Live incomer is earth cable wrapped in brown tape?

    Hi I wonder if anyone has any useful thoughts on this. Client wants me to redo consumer unit but doesn’t want disruption to fabric of building. I’ve attached pic - looks like original wiring was a 16mm earth to the live incomer . The meter box is >20m away. I guess cable is cable but 16mm...
  3. tee-eff-ten

    Two supplies, one cable- Regs?

    I have always been of the opinion that this was not specifically dis-allowed as long as the cable rating etc was correct and everything identified properly. To be more specific we're talking about 2x SP mcb's in a board using two cores for each circuit in a 4c cable, splitting at a junction box...
  4. L

    Wall socket cable length?

    Hey there, I'll be building an electrical socket on the other side of the room. While passing a wire through the wall I wonder, does length affect socket safety? Would a long cable going through a 2m long wall need to be protected in anyway to make it safer? The wall is finished so I'll need...
  5. O

    DNO cable to head flopping around next to a bed

    I found this in a property today, I've never seen the incoming cable to the head (above and the other side of this wall) just dangling in free space before, in a bedroom. It's normally in a wall cavity right? Boss said note it on the MWEIC, would you guys feel you had too notify someone?
  6. lozarus

    SY cable on EICR again ....

    Morning all So the site I'm based at recently had some work done (think partitioners). This package of work included electrical. This was actually good news to me in a way, as it was one less job for me to do on an already busy schedule - but it was niggling at me that I'd possibly end up...
  7. F

    An unusual 3 wire cable voltage

    A 3 wire cable. Black, red, and white only. No ground. What does it mean when, black to white 0v, black to red 120v, red to white 120v? Thanks, Flatwall.
  8. V

    No power on boat through shore cable in marina

    I plugged in my 50A marine shore power cable but received no power on my boat. The receptable at the pedestal definitely delivers power and when I test with my DMM, i read 117V between W and G at the end of my shore cable to my boat. There is sitting a device at my boats fuse box which shows a...
  9. R

    Heat resistant cable connector

    I need to connect an infrared panel to the ceiling. The panel comes with a pre-wired 13amp plug, but it needs to connect to the supply left in the ceiling by my spark. Does anyone know of a quick release connector that is also heat resistant.
  10. I

    Cable Calculation Help - Adiabatic Equation

    Need help check that my cable calculations are correct as still new to doing them. 6A Lighting Circuit 60898 MCB Type B wiring in 1MM²/1MM² T+E supplying a single 10W outdoor light Length = 3.3M Zs@db = 0.22 R1 + R2 mΩ/M = 36.20 mΩ/M - Table lt P218 OSG Correction Factor - 1.2 - Table L3...
  11. Simon-0116

    Cable calcs zs and ze values

    Cable calcs using cable calc app Working out cable size for a workshop. 100m long, 100a supply, mccb 100a zs- 0.23 ohms, in a duct on its own, tt earth on 300ma rcd.- 20 ohms App says 50mm swa which I expect. But if I alter earthing to tncs 0.35 ohms it says max ze exceeded zs of device...
  12. I

    Cable Calculations on Ring Circuit

    Hello, I am a trainee electrician just starting to get into doing cable calculations. I understand them when it comes to a radial circuit but get lost when it comes to ring circuits. If I take my Ib and In as being 32A for example how would I go about selecting a cable size and proving it is...
  13. maccaandy

    Cable in concrete trench corroded

    Hi, A few years ago I had some cables run from my fuse board to my kitchen. The cables were laid inside my house through the concrete base. There was a long trench dug through the house, and the cables laid into it. Now, a few years on, I've had a qualified electrician confirm that the cables...
  14. CristiP

    Cable calculation exercise

    can anyone help me with this problem ? i don't understand it ive triend to get involved in it but still i don't get it thanks
  15. B

    I'm in trouble wrong cable for car charger

    Doing full rewire customer asked me to run a supply for future use car charger supply I ran 6mm 3core swa to where the car charger is going in future, yesterday I watch few videos and noticed data or ct cable !!! Can anyone help is 6mm 3 core swa will work with out this data or ct cable ,
  16. S

    Help/Advice with Long cable runs in garden

    Domestic property Supply number 1 6 flood lights 4x400watt= 1600 watts 250meters from board to closets corner of tennis courts Tennis court size 23m x 10m My calculations are suggesting a 16mmsq cable 2.4% volt drop Would anyone have any advice for doing long distances in a garden...
  17. Y

    Where does the the cat cable from wifi socket go domestic

    This could be a dumb question from a first year, industrial apprentice...
  18. Spinball

    Is a 35mm cable big enough for a 3-phase domestic installation with...

    ...2 x 22kW EV chargers, 10kW of solar panels + 15 kW batteries and a heat pump for a 4 bed house and a 1 bed detached garage office? Got 3 phase being put in and they're planning on putting in a 35mm cable. Just checking with you experts whether this will be fat enough. Many thanks
  19. daybyday2k

    EMT conduit fill cable versus conductor, and receptacle for 30AMP 240.

    Hello DIYer here, Seeking advice on running a 240V 30AMP circuit to an air compressor in the shop. Roughly about 25 foot run from panel to location of compressor. Have 8/3 cable with 3/4" emt for surface mount run. Can I place the sheathed 8/3 cable inside the EMT or do conductors need to be...
  20. G

    Neff hob supplied cable

    Hi, I have purchased a new Neff hob. In the box there is a length of 5 core cable. The instructions show 3 wiring methods one of which shows the black and brown joined acting as the live and blue and grey joined as neutral. The hob uses 7.7kw. In my opinion the cable looks a bit thin to be for a...

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