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  1. E

    Home Test Rig for Domestic Installer. Apols in advance for the length of this one...

    As I lack practical experience and recently failed to impress NICEIC into Registering me, I thought I could build my own test rig then test the hell out of it and try to develop fault-finding skills before paying for another assessment. My rig is deliberately non-logical - eg I have a switch on...
  2. R

    Lighting circuit cable selection

    For selecting the correct cable size how do I determine the cable length in a loop in lighting circuit? Will it be the distance from the consumer unit to the final ceiling rose? Do I have to take into account the cables running from each ceiling rose to the light switch? I have attached a...
  3. J

    hdmi or cat5 at 10m length?

    will a 7.5/10m hmdi cable to tv be ok to use or will I hve to use cat5/6 how is the lata done?
  4. yellowvanman

    EICR Observations

    Would like to get other opinions on the following observations of a property that was rewired 10 years ago: 1) Excessively long ring - r1/rn/r2 = 1.56/1.56/2.48 2) Mismatch of RCBO - Hager RCBO in Legrand CFU with othe rLegrand MCBs
  5. R

    Loose Wire Underfloor Heating Cable Can Be Cut To Length?

    I often install loose wire systems , mainly because of the shape of the room and the fittings like showers and toilets , the question is are there any out there that can be trimmed to length and sealed , the amount of times I have to keep living and relaying to use the full length is a pain ....
  6. H

    Rcbo functional earth location

    When wiring an rcbo where do you tend to put the functional earth? I'm assuming it will be tricky to ensure the small functional earth will get a good grip when placed with its corresponding cpc, so do you put your functional earth in its own terminal?
  7. Andy78

    led extrusion/channel.

    Does anyone know of a good online supplier of recessed aluminium channel for led tape ? The numerous wholesalers round here all do not seem to carry it.
  8. L

    Volt drop

    Hi I've a few questions regarding volt drop. Apologies if its a little longwinded but I'd like to get my head around everything. An example scenario is a section board with a TP sub main to lighting and power board (DB2) Calculations for circuit : Supply Voltage = 400 Volts Ib - Design...
  9. Y

    DC Volt Drop Calc

    Hi all, I appreciate this has probably been posted to death but the search wont load on my phone. I have to calculate for Volt drop in a DC circuit, There's next to no load (2 amps max) the cable is 4mm pvc twin, and ln a loop from the control unit to the loads. OveralL Length 50m Is the calc...
  10. Pete999

    Cable Length Measurement Avo CLM200

    Has anyone any experience in the use of an Avo CLM200 meter I have one but never really had the need to use it, can't even recall when I got it or how much it was (yes I'm a tool tart) before anyone starts.
  11. N

    Approx re-wire length of time?

    Hi all. I know it all depends on routes, snags etc and you havent seen the property but I'm after an approx length of time (give or take) you would expect this rewire to take for one electrician. 5 bedrooms, lounge, dining room, kitchen, playroom and 3 bathrooms. Also 3 landings to have lights...
  12. sam400

    1m sds drill bits

    Can anyone recommend me a decent 1m sds drill bit, I've managed to shear a few of them off at the chuck.
  13. yellowvanman

    Length of ring

    Friend (honestly) of mine was given an observation on his yearly scam visit, something to do with the ring circuit being too long. Used r1 figure to work out length of cable I assume. There's nothing in the BYB regarding this where else could this requirement be?
  14. yellowvanman

    LED Tape

    Anyone installed long lengths of this? Customer wants it stuck on top of a picture rail around a room (about 20m), there will also be breaks in the picture rail for doors etc. Just need a heads up on pitfalls with this sort of length required.
  15. U

    Calculating Zs for known and unknown cable length.

    Hi guys, Am I doing Continuity test calculations in a right way? For unknown length of a cable: Circuit breaker B16A, let Ze be 0.26 ohms. Zs from Table B6 (OSG, p125). MAX Zs-Ze = Max expected (R1 + R2) = 2.2 - 0.26 = 1.94 ohms For known length: Let's assume the cable is twin with 1.5x1.5mm2...
  16. A

    Max length of unsupported flex to a light fitting.

    Max. Distance for an unsupported flex from a clik ceiling rose to a light fitting. Can anyone point me in the direction of the Regulation number?
  17. S

    Max length

    Need power to shed .thinking of a spur from 32a ring as only want 1double socket and light is there a max length for a this
  18. S

    Multiple LED strip power issue

    Hi people. Bought a 12v dc power splitter cable to power 2 5meter length 5050 colour change LED strip lights. noticed the next day that the cable melted really bad. Im not sure why this is? the ac-dc is a 6amp 72watt and the total power of both strips should be 48watt so that should be fine...
  19. E

    Meter Tail Length

    Afternoon all, Carried out an EICR yesterday, on the job I doscovered the consumer unit to be located in the kitchen and the incoming supply under the stairs. The tails feeding the board look to me to be just over 3 meters perhaps 3.5. But it is difficult to tell as they are ran in an internal...
  20. M

    Volt drop

    Hi, Im a fairly new sparky, So just wanted to get a little idea as im not 100% sure, Im adding 12m of 1.5mm cable in trunking into a conservatory from a fcu of the ring main the volt drop for this part would be 4.5v so i may need to up the cable size. But what i need to know or confirm is what...

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