Recent content by Newtothis

  1. N

    dry line boxs back to back?

    the stud wall only just goes up to the non fire rated false ceiling
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    dry line boxs back to back?

    Can dry line socket back boxes be mounted back to back in a stud wall if its deep enough? And if so do they need to have the fire seal installed? I doubt the walls not a fire barrier as it only just goes up pasted the false ceiling but it is still fitted with fire rate double plaster board
  3. N

    Exporting an earth xD

    I know this is going to cause madness but how would this work exporting the earth is driving me nuts i feel like its a hard one to understand for example a house has a tncs and it supplies a metal shed that is a TT system so the earth has not been exported. the shed is 30m from the house the...
  4. N

    pir sensor in false ceiling

    I know fire rated downlights are installed in false or suspended ceilings as the normal as the cost difference is small... But what about PIR sensor in a false ceiling or a suspended grid ceiling wouldn't they need to be fire rated if it was a fire rated ceiling?
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    Type B rcbos and inrush current

    this is the panel 12 of the 23w MODLED LG - High performance backlit module with VDT optic | Tamlite Lighting United Kingdom - https://www.tamlite.co.uk/product/modled-lg but i cant seem to find much info on it?
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    Type B rcbos and inrush current

    in what way?
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    Type B rcbos and inrush current

    calculated is 110x 0.0302 = 3.322ohm Measured is 1.5 ohm 1.5mm 10 amp type c load is about 400w evenly spread give or take vd of about 5.8 v
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    Type B rcbos and inrush current

    Does any one have a rough idea how many 24w led panel 600x600 could go on a 10 amp type b rcbo with out tripping or a 6 amp type B rcbo I found a long circuit that complies with zs when a direct measurement is taken at its furthest point , but on length alone im sure it does not comply by...
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    UK Are lighting marshalling boxes a legality?

    I agree man the boxs of klik points look suited to the job
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    UK Are lighting marshalling boxes a legality?

    Its how one of the buildings I have been in was done, but it was only like that in the corridors in all the rooms it was marshall boxs I think it looks like it was done like that as the ceiling above the false ceiling is slanted made of metal and about 2 section of a tower above the false ceiling?
  11. N

    UK Are lighting marshalling boxes a legality?

    What about something like this? its not in a Marshall box or laying on the false ceiling tiles
  12. N

    Design current?

    Thanks for the replies everyone, had covid related issues so i wasn't able to reply 0.o a little off topic but it goes along with the design off a lighting circuit would this be an acceptable way to run a circuit ? using something like this...
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    Design current?

    So for my example circuit I calculated the VD from the origin of the circuit but then after the switch only the current drawn down the switched live... But what about the current the permanent live would draw at every other light for its emergency fitting Would that need to be calculated as...
  14. N

    Design current?

    Okay what if you run 3 core and earth from the switch to light led on the circuit as half of the lights were emergency lights. so you had a SL and a PL at every point? the onsite guide on shows two core and earth? would it double your cable legnth? would that change your volt drop or would it...
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    Design current?

    i rounded because i was lazy 8) Ah thank you I get it now :D I also realised if you are using LED lights its going to be pretty hard to exceed VD if the loads are distributed . for electronic loads how would you be able to find out the unity power factor? 1594843736 I looked at the on site...

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