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  1. bigbob1

    New sub board for shed swa advice.

    yes consult the DNO. It is their Earth not yours. It’s their TX not yours. It is their engineers that calculate where and when a neutral can be used as CNE. No if you ask them for permission and they say ‘yes’ then you can. Obviously. ‘ With TT systems, the consumer must provide his or her own...
  2. bigbob1

    New sub board for shed swa advice.

    Understand the difference between a ‘main earth terminal’ and a ‘earth marshalling terminal’ in respect to taking a supply out of an equipotential zone. There is also only one use for an SWA gland. EAWR section 8 May be a bit complicated for some of you but I would read it a few times and...
  3. bigbob1

    New sub board for shed swa advice.

    its physics. And you aren’t allowed to export a tncs earth without DNO permission. In fact it is such basic physics I learnt this in year 2 at college. The regs are a ‘guide book’ not a ‘must do’ book. You’d best hope I am never an expert witness and you are being prosecuted. IET guidance note...
  4. bigbob1

    New sub board for shed swa advice.

    its physics. And you are not allowed to export a tncs earth without DNO permission. In fact it is such basic physics I learnt this in year 2 at college. The regs are a ‘guide book’ not a ‘must do’ book. You’d best hope I am never an expert witness and you are being prosecuted by us at the HSE.
  5. bigbob1

    New sub board for shed swa advice.

    If anyone can think of any other use for an SWA gland other than being on the end of an SWA cable then please feel free to share your stupidity with all.
  6. bigbob1

    New sub board for shed swa advice.

    RCD in house, so you are protecting the cable and can see if your freezer has tripped out. RCD in shed for circuits also. Nuisance tripping means they are working! If the shed or house RCD go then good that’s what they are meant to do! Find the fault! Do not export the TNCS earth! Your...
  7. bigbob1

    Building Control Guidance on Retro-fitting Solar Panels

    Schletter mounting system You'll have to talk to SIG fixings and ask them to get hold of those bolts, i just get 500 a time bout £25. They do a sealing washer as well that will fill any gap up in the roof anchor hole when a washer comes down on top so there is no movement in the bracket once...
  8. bigbob1

    Building Control Guidance on Retro-fitting Solar Panels

    i'll take a load of pictures for you to show you how to fix an anchor with a 4mm bolt to a rafter not a problem. I suggest you use a person that is competent at being able to evaluate a structure and give you proffesional advice on how to go about doing your work on that structure. It seems you...
  9. bigbob1

    Building Control Guidance on Retro-fitting Solar Panels

    SRE he wouldn't be on here if he had done 7 years at college to become a structural engineer would he? I suggest you check out SIG fixings, you can get a 4mm shafted hex head zinc coated wood screw. cheers
  10. bigbob1

    Building Control Guidance on Retro-fitting Solar Panels

    What you have linked there is what was said on the phone. this is the information he sent me >>Refer to BS 5268 part 2:2002 Appendix G for your screw type's and lengths. and this is the email he sent saying the thickness of an acceptable screw>> to be put in to a pre drilled hole. Hi Robert...
  11. bigbob1

    Building Control Guidance on Retro-fitting Solar Panels

    Refer to BS 5268 part 2:2002 Appendix G for your screw type's and lengths. Cheers
  12. bigbob1

    Building Control Guidance on Retro-fitting Solar Panels

    hi!! My magic answer is........... fixing to the top of a rafter has nothing to do with axially loaded screws!! so table 8.6 of eurocode 5 has absolutely nothing to do with mounting a roof anchor!!. As your not loading the screw in tension, or creating a shear force on a structural joint...
  13. bigbob1

    Building Control Guidance on Retro-fitting Solar Panels

    No Probs Forget about Eurocode 5 untill you've looked at Eurocode 1 EN1994-1-4: 2005 http://www.thomastelford.com/books/SampleChapters/Designers%20guide%20to%20EN1991-1-4%20Eurocode%201%20wind%20actions.pdf Also look at this program it can help greatly WOODexpress - Design of Timber structures...
  14. bigbob1

    Building Control Guidance on Retro-fitting Solar Panels

    143 mph and all the click fit clamps bend totally out of shape, and the bottom corner comes off a panel, and that was just testing the up lift on the panels with clamps at 400mm centers!! with suckers attached that can't re-create the back and forth blow of the wind!! lets hope we don't have...
  15. bigbob1

    Building Control Guidance on Retro-fitting Solar Panels

    I'm only relaying what Graham Evans Inspections Manager South has said to us and what Building Control for Essex County Council have said to us so no need to get your knickers all twisted up.
  16. bigbob1

    Building Control Guidance on Retro-fitting Solar Panels

    Here's a bit of guidance for anyone that has used the Klickfit (pull over tile and batton roof anchors) mounting system. Once the local building authority knows you have used this system they will make you take it down at your expense!! as it goes against bre guidance and dti guidance and...
  17. bigbob1

    When not to install solar !

    If your measuring up a house you have to remember to leave 500mm either side of the panels and don't have them sitting in the gutter! could be diffrence between 994 panels or 800 panels. South facing 35 degrees no shadng. SAP calc upto 20% shading does nothing to the calc. North East/West does...
  18. bigbob1

    Solar Engineer Tool Kits - TMPV Series by test-meter.co.uk

    The Metrel mi 3000 was fine today, was a bit confusing using 3 leads for loop and line testing, but it gives pfc and pscc as you do those tests. My megger would automatically pick up on continuity and start a test but the metrel you have to push the button, so R1+R2 push button to test, rcd trip...
  19. bigbob1

    Solar Engineer Tool Kits - TMPV Series by test-meter.co.uk

    I'm doing a bit of testing with it tommorrow so i'll let you know mate.
  20. bigbob1

    Solar Engineer Tool Kits - TMPV Series by test-meter.co.uk

    Thank you test-meter, ordered a new multifunction tester on friday and i have it here on monday! Went for a Metrel mi3000, used to using Megger but fancied a change. Amazing value for this tester, comes with everything you would expect and a bit more, rechargeable ability which is smart...

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