Search results

  1. J

    SWA cleats

    > The problem was that the T+E cables were placed sideways > and secured with a clip designed for one cable. I can understand > this being an issue as the T+E cables will get crushed by the clip. On the surface... o Big FTE clip over 2 cables - nasty, easy to crush a cable o Correct P...
  2. J

    cutting 1 + 1/2 inch chase in brick wall

    Think you may run into depth problems re BR 1.1 Structure limitations. Vertical chases - not deeper than 33% of wall thickness - or 33% of one leaf thickness if cavity wall - thus limited to 30mm for 4" brick Horizontal chases - not deeper than 16.6% of wall/leaf thickness - thus...
  3. J

    gutter drainage

    On old houses... - Drainage can be mixed - Guttering & washing machines down same pipe - Typically very obviously re central grid On new houses... - Drainage is separated - Washing machine down foul-water pipe - Storm water down different pipe (often to soakaway!) Find out what you...
  4. J

    Upstairs chimney w/ vented plug , only vented underfloor

    Chimney upstairs & downstairs flue have rain mushroom-plug w/side holes. Neighbour had chimney repointed by known good builder reported no chimney problems up top. House is cavity, no rendering, loft recently checked ok & insulated. Downstairs flue is vented. Bottom vent via gas fire which...
  5. J

    Routing bonding conductors

    I recall the 16th OSG indicates... - 10mm insulated IF mechanically protected (conduit) - 16mm insulated if NOT mechanically protected - 25mm bare if NOT insulated + NOT mechanically protected DNO can impose their own size requirements. I recall the 17th has changed this area slightly.
  6. J

    junction box

    I said "a NICEIC" - as in a NICEIC spark. On walking through the door, a spark stating "if we find any Jn Boxes in the loft / under floorboards it means a rewire" is deception. That may be by ignorance, whatever, BS7671 does not necessitate it. I only posted because I have heard this phrase...
  7. J

    Does this comply with building regs?

    Drilling... Might be worth investigating the Bosch DMF 10. Would have saved many lives I suspect for just 44-50ukp on fleabay. Works reasonably well. Detects cable / live cable, non-ferrous (copper & lead water/gas), ferrous. No experience of its ability to detect stud/noggins. Complex...
  8. J

    Welder tripping MCB

    Must be an expensive bolt - the fixing wiring is now the fuse protecting it :-)
  9. J

    junction box

    Somewhat wryly I suspect this is a NICEIC? The law is very clear, specifically... 1. BS7671 is not retrospective (MEB presence/sizing is a requirement for supply) 2. BR are not retrospective 3. IEE regs permit Jn Boxes as long as they remain accessible 4. IEE regs permit Crimps which are...
  10. J

    Standalone RCD?

    > leads to all existing connected circuits needing to be brought > up to regs i.e. possibly the whole house will need a rewire. Nope. Connected circuits do not need to be brought up to current regs. - BR are not retrospective - BS7671 is not retrospective I can see 17th is likely to be...
  11. J

    SWA inner insulation

    The layer over the insulated conductors is called "Bedding". The insulated conductors sit in the bedding to protect them from the SWA armour during flexion, pulling, etc. No, run it through plastic conduit. About 4" of separation between adaptable box & CU... A) 2x 20mm female conduit...
  12. J

    Electric Company & Henley Block

    Not at all :-) However from the photo I can't make out if that is an iron barrel gas main & wiped lead water pipe in the photograph as well. Nice mix in there!
  13. J

    Electric Company & Henley Block

    Yes ebee it would, very much so, thank you for adding. I quickly added smoke at the end as much a subliminal suggestion to the OP to get smokes added. AICO smokes are ok, if the OP can't interlink due to decoration use the radio bases. Costs a bit more, but smoke alarms really do make the...
  14. J

    Close up photo of PME service feed.

    Naked! Phwooaaaaarrrrhhhhh :P ... I'll get my coat...
  15. J

    Electric Company & Henley Block

    > One more question, I remember reading on here that radials > dont necessarily need to be continuous, so could I, > for example, have 2 radials fed from one MCB? A radial can have any topology. - A radial of 2 cables into the CPD is 1 *final circuit* - However the CPD *should* be...
  16. J

    Pipes - Electric Cables

    1. Lag the pipe or increase cable CSA to compensate. Cable is derated based upon installation factors. - Installation method (M1, M3, M6, etc) - Ambient temperature - Cable grouping - Rewireable fuses - Insulation completely surrounding the cable Taking 6242Y (FTE)... - 30oC = 1.00...
  17. J

    IR

    IR - define "poor"? IR - check for neon, check for capacitor network? IR is the leakage between the length of conductors across insulation. Continuity is merely that of the said length of conductors.
  18. J

    10ma RCD, Protek (not Proteus) ok, or worth spending more

    Sounds good, ok, Protek it is, will test with RCDT320 anyway - just in case it turns out to be a switch :wink: Thanks.
  19. J

    10ma RCD, Protek (not Proteus) ok, or worth spending more

    Anyone know if Protek 10ma 25A DP RCDs are ok? Only ever used MEM MG MK RCDs, never Protek. I assume they must be re BSEN compliant, although lifespan might be an issue. Price is as much volume related on RCD/RCBOs. It's for a relative in a Clipsal RCD-Skt box glanded to plug, simply...
  20. J

    17th ed shallow buried non-RCD circuit in metal conduit OK?

    You could use SWA or BS8436 cable. - BS8436 looks a bit like FP200 Gold - Note the limits on bend radius - Quite hard to find, no-one doing cut lengths of it either Basically any of the cables/methods named in 526-06-06. The problem with steel conduit is a) bending + die/tap hire b)...
Back
Top