osg

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  1. L

    max zs table in the osg

    Hi all sorry for this silly question but i cant seem to find the max Zs table for a 10A BS88-2 Fusein the osg. I can find it in the BGB table 41.4 10A = 7.19 ohms and i know to multiply it by 0.8 (7.19 x 0.8 = 5.75) for rule of thumb but i would like to find the right table in the osg
  2. J

    osg, gn3 and or 7671 in pdf anyone?

    Hey guys. Got my 2394 and 2395 exams in a few weeks and just trying to get some extra revision time in while on my breaks on site. There was someone selling copies off all the above plus many more for about a fiver on ebay up untill a few weeks ago but I was quite happy with just reading in...
  3. S

    Osg not to hand

    Hi guys, Does anybody know what the r1+r2 mOhm/m is for 10/4 t&e? also the corresponding mV etc figure forV.D? many thanks
  4. H

    BS7671, OSG et al - Effective Markers and Referencing

    A bit of an odd one, I'll admit, but I'm relatively late in settling on a system of annotation to help me find common information fast and to cross-reference it for review. I know this isn't terribly exciting, but I'd be curious to hear / see how others have implemented their system, and what...
  5. N

    What Dost Thou Mean, o OSG?

    Section 3.3, Fault Current Protection. "When a CU to BSEN60439-3 or BS5486:Part13 or a fuseboard having fuselinks to BS88-2 or BS88-6 or BS1361 is used, then fault current protection will be given by the overload protective device. For other protective devices the breaking capacity must be...
  6. R

    regs and osg

    Are the red books ok for a scheme assessment with the amendments printed off?
  7. 9

    osg and regulation book 17th ed

    Osg guide 17th edition for sale copy of the big red book Handy for people who don't have them as amendments can be printed off the net On eBay hit ending soonest and you'll find then
  8. 1Justin

    Constructive diversity calcs. - OSG method or just keep it reasonable?

    Diversity. How do you tend to justify domestic installations when you come across what seems to be really common 60A BS1361 supplier fuses, where it all looks too tight according to recommendations in OSG? Say we find 30A ring upstairs and 30A ring downstairs for starters. (plus 2 x lights...
  9. jimbo81

    osg tables

    HI there this is my first post. im sitting my ACA soon and found all your posts very helpfull. Im having a few probs tho. When doing your ze if its 3ph do you test each and take highest result or an average or do you just test one phase and where is the table in the osg i compare the results...
  10. N

    Which is better OSG (Green) Or IEE Green for Periodic Inspection Reporting and I&T?

    Should I buy the new On Site Guide (Green colour) Or the IEE Wiring Regulation (Green) If I wanted to get more examples and explanations for Carrying out the new Periodic Inspection and Testing. Also would it containing anything regarding filling the Periodic Inspection and Testing Report with...
  11. kingeri

    OSG Table 7.1(i)

    Table 7.1(i) lists standard circuits that can be installed without calculation. The radial circuits are all listed as having a terminal load. Can they equally be used for socket circuits? Just to settle an argument!
  12. H

    Smoke alarms New OSG

    What page are they mentioned on. Cant find them in new one
  13. C

    Cable & Pipe Proximity - OSG Ref - Can U help?

    Dear All Can anyone help? Am working for the Bob "the know it all" builder on a re-furb and huge extension. I want to move some existing cables because they are touching and in some instances wrapped round hot water pipes. I know it's not specific in Regs re distances Sec 522, however have...
  14. M

    Model EICR in OSG contains mistake(s)

    Just noticed that the model EICR in the OSG contains at least one mistake ... Nominal Frequency filled in as 150Hz ... I sense an IET corregendum on the way.
    • MarkieSparkie
    • Thread
    • aus designed eicr electricians' talk installations model osg still
    • Replies: 9
    • Forum: Australia
  15. tank

    Max Zs in OSG and the Regs

    Hello all, i'm currently doing level 3 2330 and am getting a little confused with the different max Zs values in the OSG and the Regs. I'd appreciate any advice . Would i be right here I use the max Zs values in the OSG for installation design as these are lower to account for the reduced...
  16. 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.
    • ringer
    • Thread
    • aus available electricians' talk green osg
    • Replies: 2
    • Forum: Australia
  17. 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...
    • kung
    • Thread
    • electricians' talk osg paying people regs regulations update
    • Replies: 12
    • Forum: Business Related
  18. 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...
    • simonspark
    • Thread
    • aus electricians' talk osg right
    • Replies: 52
    • Forum: Australia
  19. 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...
    • p11jor
    • Thread
    • aus electricians' talk osg
    • Replies: 3
    • Forum: Australia
  20. 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...
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