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sizes

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  1. A

    Cable sizes

    What is the best way to guestimate or even better correctly identify the CSA of cables which have no markings on them. I would like to know the size of the tails out om my meter, im assuming they are 25mm, but i guess they could be 16mm. It has a 100 amp cut out fuse. One day i will work out...
  2. sythai

    Storage heating calculation....

    Good afternoon chaps.... Just been trying to find a calculator on line, but no joy - Dimplex has one, but not very user friendly! Have a couple of rooms requiring night stores, so need to calculate the sizes required. Could anyone please point me in the direction of where I may find a...
  3. R

    Rafter screw sizes

    Been lurking for a while! Doing my 1st install for my own roof for my assessment before the cutoff! For what its worth! Managed to get a complete kit with panels, fixings etc. The kit comes with M8x80mm s/steel wood screws. Reading through other threads there could be a problem with these...
  4. S

    SWA Sizes

    Hello All, Is there anything you can get to find out what size CSA for armoured cable if already installed and unable to read the sheath.i struggle to work out for eg.is it 35mm or 50mm
  5. Rockingit

    Heat Shrink sizes

    I'm getting fed up with buying the multipacks of heatshrink from wholesalers and throwing most of it away as being either too big or too small.... What's the best shrunk dia size to buy in for 10,16 & 25mm cables? (one conductor).
  6. Y

    Different elevations and string sizes

    I have a dilemma. A prospective customer has an East facing roof which I can get 10 SANYO HIT-N240SE10 (the smaller size panels). He would also like me to fit 4 panels on a South facing elevation. I realise micro inverters would be the simplest solution but could I use 2 standard inverters on...
  7. L

    How to wire swa to flex of different sizes

    How would you connect 16mill swa to 1.5 mill flex? Tom
  8. J

    Bonding sizes and location

    hi guys doing some remedial work to give a satisfactory grading after a periodic on a large commercial building, one of the items is the sizing of the gas bond. its done in 6mm. my argument is that it was designed that way when it was installed (30 years ago easily) so y does it need to be...
  9. J

    Bonding sizes.

    hi guys doing some remedial work to give a satisfactory grading after a periodic on a large commercial building, one of the items is the sizing of the gas bond. its done in 6mm. my argument is that it was designed that way when it was installed (30 years ago easily) so y does it need to...
  10. B

    Cable sizes for lights

    Was carrying out a PIR today. 10 x low bay lights supplied via 20A MCB Cable to klix units is 2.5 which is fine but from klix to lights is 1.5 should this be reported (20A MCB too large for 1.5mm)
  11. sparks1234

    Tail sizes

    We come across 16mm tails on 100 service fuses quite a lot. What are peoples thoughts on this? usually they are fairly short but neverthe less!! We are just carrying out one job on a brand new installation and we have this scenario, somebody has installed the dis board and lighting installation...
  12. J

    A question about main fuses & meter tail sizes.

    I'm sure plenty of us have seen 100a fuses on 16mm (or less) tails and know that that simply doesn't work. My question is, has the ccc changed or something as why would they have been installed in the first place?:confused:
  13. K

    Oven and hob cable sizes etc

    I have a friend who is having a hob and oven replaced. These are both electric. The hob believe it or not is 7.9Kw (induction type) and the double oven is 4.9Kw Am I right in assuming it will have to be on two seperate circuits and will 6mm do it. I have necer come across a hob with such a...
  14. T

    another way how to estimate cable sizes...

    I have an idea, dont know if it will work though. Who here has trouble estimating cable sizes? mainly larger ones? Right here goes, get hold of a micrometer, measure the width of the cable and find out how many micrometers it is. Now for the tricky bit, the formula to find out the CSA from...
  15. G

    MICC (Pyro) Sheath, Actual CSA Sizes.

    Physical cross sectional area of MICC/PYRO copper sheath when used as CPC. 2L1 ****** 5.4 mm2 3L1 ****** 6.7mm2 2L1.5 ****** 6.3 mm2 3L1.5 ****** 7.8 mm2 4L1.5 ****** 9.1 mm2 2H1.5 ****** 11 mm2 3H1.5 ****** 12 mm2 4H1.5 ****** 14 mm2 2L2.5 ****** 8.2 mm2 3L2.5 ****** 9.5 mm2...
  16. J

    cable sizes for lighting

    hi all again its another cable size Q lighting is ran in conduit and supply 8x ft batton fittings 50w each grouped with 3 other circuits ran in single cores total lengh is 100m 230v can any one give me advice on the size of cable needed, i know the usual is 1.5 for lighting but it states...
  17. D

    lighting breaker sizes

    Forgive me if im just being stupid...but the on site guide shows that a 1.5 mm cabe can carry a current of ...12a...or summat like that..cant remember now...... Why then do we protect lighting circuits with a 6a beaker ? ....or am just being dumb here..???:confused:
  18. J

    cable sizes

    hi in collage today we were doing cable sizes and i am stuk on one question can any one help. the question is the load is 50Kw 3phase the total lengh is 50m its ran in metal trunking with 1 other circuit 30 degrees room temp what will be the cablke size required and what mcb should be...
  19. F

    Final CCT's with 2 sizes of T&E fitted

    If faced with a Domestic Final CCT (Lighting or S/O) and it has 2 sizes of T&E used, lets say a lighting CCT with 1.0mm used on some lights and 1.5mm used on other lights and if Zs & IR all complies - When writing out the Schedule of Test Results, what size Wiring conductor should be noted in...
  20. E

    Typical Ladder/Step Sizes for access & Best Place to Buy!!!

    Evening. I own 2 pairs of yellow fibreglass step ladders, 1 pair at 1 metre and the other at just over 2 metres. I am now wanting to purchase a set of either double or triple aluminium ladders for using when putting up outside lights etc. Been nearly 20 stone I think I have to buy class 1 even...

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