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  1. ringer

    Green OSG now available

    Got a green OSG from the IET stand at Elex for £17 today (normal price £24). Very first print run only just available today. Not had chance to read it yet but contains tables etc reflecting new amendments.
  2. K

    How much are people paying for the update regs & OSG ?

    On-site Guide (£18) Plus Wiring Regs (£64)3030 Pre-order your On-site guide with the Wring Regs for £82. Fill in the attached form by clicking on "Download Technical List" and email it to the sales team ( [email protected] ). Or alternatively ring our dedicated sales team on 0843 290...
  3. S

    OSG. Page 33. Is this right?

    Hello all. The other day I was leafing through the red OSG and for no reason started to read chapter 5, isolation and switching. At point ii for every other circuit it says blah blah blah......... The device must switch all live conductors in a TT system and all line conductors in a TN system...
  4. P

    OSG appendix 8.7

    Hi all table b here shows the miniumAmount of sockets required....is this for a new build or is it refurbishment also?Part B require main smokes on refurbishmentOSG appendix 8.6 figure 8A only states the socket heights come into play on new dwellingsBut the minium sockets in 8.7 table do not...
  5. S

    Books? 7671- osg- gn3

    Hi all am I correct in thinking there are new books coming out for the 7671 on site guide guidance note 3 I only ask as I need to get a new osg as my flask of coffee empted its self all over mine this morning and im going to need my gn3 for my niceic inspection coming up? cheers all...
  6. R

    Anyone know of a OSG PDF or on screen version i could get hands on

    Hi all as heading says, looking to see if i can get hold of OSG for my PC. so i can use at desk anyone seen or has that can share or point me in right direction if there is such a thing. all best to you all
  7. F

    Osg & bs7671

    Hi people two questions- 1- which page in the osg where it tells you resistance of cables giving you the live sizes and cpc like 2.5 L 1.5cpc? 2- which page in osg and 7671 is the current carrying capacity of armoured cable. Not got the books to hand Thankyou!
  8. Jay Sparks

    OSG in the 2391 Paper exam

    Hi Guys, I was talking to my superviser the other day and he said when he did the 2391 he was aloud to take the OSG or regs book in to the written exam. I thought you could only take a calc and pens etc. Am I wrong?:confused: Or is he?:p Cheers Jay
  9. ringer

    Final Circuit conductor sizes in OSG 8.2

    Referring to pages 158-159 in the OSG Table 8A Type, OPD(A) A1 Ring, 30 or 32 .......etc 8.2.3 Conductor size ....The as-installed current-carrying capacity Iz so calculated must not be less than: 20 A for ring circuit A1 Am I reading/interpreting this correctly when I say...
  10. E

    OSG pg 160.Cooker circuits in household and similiar premises. 8.4

    Hi all with respect to the above ref from the 17th OSG. Could someone explain how "a 30 or 32 A circuit is usually appropiate for household or similiar cookers of rating up to 15kW". is the key in the words " rating of 15kW" , in that its not a 15kW load?? using i=p/v amps would be around...
  11. J

    understanding tables in OSG and 17th regs book???

    hello just taken my Am2 exams last week and past everything apart from the 30 question online exam. I have booked myself in for a resit of the questions for next friday. questions like... 50mm by 50mm metal trunking fixed horizontally over 20m, how many fixings would it need? that...
  12. C

    Which is wrong, the BRB, the OSG or ME!?

    I'm looking for the maximum value of Zs for a Type B 32A MCB. I have found the references in the BRB and OSG and they seem to differ. Please can someone check i'm not being stupid. :confused: Page 49 Table 41.3 of the BRB and Page 103 of the OSG. Thanks in advance.
  13. C

    OSG Final Circuits voltage drop table question

    Just been flicking through and table 7.1 to enable final circuits to be installed without calculating voltage drop has one of the criteria as ii)The final circuit is connected to a dis board or CU at the origin of the installation Just seeing that I understand this and the reasoning behind...
  14. C

    17th reg and osg. whats the difference ?

    When i was at college my teacher told us that the only legal requirement book on electrics was the HSEs (EAW) Electrics at work act, the IEE regulations book were just recommendations and the on site guide was (obviously) just a guide to help but doesn't have to be put into practice. Am i still...
  15. C

    wanted: wiring regs & osg 17th

    hi all i don't know if this can be posted here but im after pdf versions of both books if anyone as them please. so i can read them on laptop when im out regards confused fuse
  16. lurch

    Osg

    guys, where is best to buy OSG and how much?
  17. W

    osg

    the other forum is mentioning mistakes in the osg has anybody spotted any yet???
  18. D

    Differences between OSG and Big regs book

    Has anyone noticed any differences between the New ON-SITE GUIDE and the Big Red 17th Edition regs book?. I have noticed that some max permitted zs values are different. For example OSG says BS EN 60898 TYPE B 32A = 1.16 ohms and Main 17th Regs book says BS EN 60898 TYPE B 32A = 1.44 ohms Is...
  19. 4

    osg out now

    my new osg turned up this morning from amazon so i guess its out now for all those who have been asking for a release date
  20. J

    16th or 17th edition OSG and BS7671 regs

    got my part p assesment in 2 weeks or so, completed my two jobs back in early may to 16th standard, will i need the 17th edition OSG and regs or will my 16th be fine... what do you think?

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