selv | Page 2

selv

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  1. S

    Selv

    I've recently installed a SELV transformer (original one was removed by a French electrician 3months ago!). Having connected the 230v supply to the 'pri' end, I haven't got any output voltage (looking for 11.5v DC). I took it back to my supplier & got a replacement but it too is showing no...
  2. L

    Insulation test on Selv downlights?

    Hi All I've done my C&G2382 and now I'm studying for 2392. I was mucking about at home with various tests and came across this and I'm a bit stumped. How do you do an insulation test on the ELV downlights? Is there a way that you don't just read the resistance of the transformer? Hope you...
  3. K

    SELV and 230V circuit separation

    It is planned to install a central 24V SELV supply in a domestic residence, e.g. to power LEDs. According to my reading, BS 7671:2008 chapter 414.4.1 (ii) requirements for protective separation between a SELV and 230V circuits offer the following options a) double insulation -or- b) reinforced...
  4. D

    Selv, pelv, felv...

    Can someone please recommend a book or website which will give me a really good detailed description of the differences between these, how they work and their applications. Been working hard on my theory before doing the 2382, but this is one area which is causing me some confusion! Thanks!
  5. La Poste

    Testing the SELV

    Correct me if I am wrong but if we are to test a SELV transformer do we: 1. Join conductors of low voltage side of transformer together. 2. Join conductors of primary side of transformer together. 3. Test between these at a voltage of 500V look for minimum reading of 1 MOhm. 4. Test between...
  6. K

    RCD's and SELV circuits

    just wondering if there is any need to provide RCD protection to SELV circuits in locations containing a bath??
  7. R

    SELV, PELV and FELV

    I'm trying to understand my options when it comes to protecting ELV circuits, in particular control/signalling/communications type. As I understand it there are three methods: SELV, PELV and FELV. I know that sometimes SELV is required due to the location. PELV seems to be a combination of...
  8. S

    SELV Testing

    Hi can anyone give me any advice on how to test a lighting radial with selv in them do i have to remove the transformer been told it could blow it if i carry out the normal test. Only thing is i cant get to it its under a wooden floor:confused: HELP!!!
  9. S

    Looking for SELV outdoor bulkhead lights??

    Evening all. Client has changed spec again.. I've installed Aurora IP68 transformers to supply 5 12V spotlights around the garden, one of which is within zone 1 of a hot tub (thus the need for SELV rather than mains voltage). However he thinks he would prefer a bulkhead style luminaire to...
  10. brucelee

    testing between selv & bandII circuits

    Hi to all, I have a 2391 question i am getting a little confused? question a test to verify seperation between SELV circuit and BANDII circuit state the a) test voltage to be applied b) Two tests to be carried out please can someone clue me up is it a) 500v b) insulation resistance...
  11. G

    help with 12 v selv extractor fan

    hi all help needed with selv fan i have fitted in my bathroom please. this is just a replacement as i had one in before, the only problem is that the fan operates as normal when the lights are switched on but the fan is not knocking off after a predetermined time as it should when the lights are...
  12. brucelee

    testing selv lighting

    hi everyone, when ir testing a selv lighting circuit if you cant get to the transformers to disconnect the transformers do you test at 250v and test between line&neutral connected together and test between them and earth is that correct
  13. U

    Selv box on Shedule of Inspections

    Hi All, Could someone confirm for me whether, on the Shedule of inspections under " Basic and Fault Protection", the Selv box should be ticked if there is low voltage lighting present in the installation. I'm a bit rusty on the form filling. :( U.
  14. H

    Testing SELV installations

    Hi all. Could anyone give me some tips on testing SELV down-lighters in a domestic installation? I'm not really sure of the correct procedures. Many thanks Harry
  15. S

    Testing SELV

    Hi there, can anyone please tell me test sequence for testing SELV ccts. Am studying for 2391 and my brains not working at the moment. Cheers :confused:
  16. G

    dimmable SELV..?

    sorry if its a basic question..!! and i have done a search, to no gain. however.. just fitted a 12v SELV unit for a client.. which they bought from bloody ikea. Client has asked if they are dimmable. Checked the items paperwork and the ikea site, both of which are next to useless...
  17. T

    Selv Bathroom Fan help?

    Alright all!! I have got a bathroom fan to replace. The existing Fan is Selv. The fan is in Zone1 & fixed to Bathroom tiles, With pull cord on the fan. There is just a Twin going to the fan. I am replacing the fan with a "Greenwood AXS100SVIHT, Single speed SELV 100mm fan with humidistat/...
  18. B

    selv & felv

    right then... doin my inspection and testing at the mo and on the schedule of inspection under both basic and fault protection there is a option for selv. now if you install 12v downlights in a bathroom that would come under selv i think. now my tutor is saying if you install 12v...
  19. B

    Bathroom downlights on selv

    Would bathroom downlights protected by selv transformer well outside fabric of the bathroom need further protection of rcd under the 17th regs?
  20. T

    Bathroom SELV Lighting

    I've registered to NICEIC and one of the major jobs is a house rewire. I got the local council in to inspect and he said that the Bathroom SELV Lighting needed covering to stop condensation, he suggested using some plaster board made into a box... this can't be true... surely it would then get...

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