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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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#1
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Mini trunking capacity
Can anyone point me at a simple set of "what cables fit in what
trunking" table anywhere? I'd have thought it was a pretty fundamental piece of information but I can't find anything very useful anywhere. Even TLC don't seem to have anything. I'm specifically interested in the very small sizes like the Screwfix 12mm x 8mm trunking, can you fit a 1.5mm T&E in that? Neither Screwfix nor Toolstation seem to have the (approx) 25 x 10 trunking that I have a bit of, TLC have 16 x 10, would that be better for 1.5 T&E? Alternatilve I do have some 1sqmm (I think, it might be 1.5sqmm) single that I could use as the things I'm connecting (outside light, all plastic, PIR, timer switch) don't require an earth/CPC. That might fit in smaller trunking than 1.5T&E. De-rating isn't an issue, it's only going to be at most two LED lamps at the end of this, 25 watts total maximum. I'll put a 3A fuse in the FCU. -- Chris Green · |
#2
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Mini trunking capacity
In article ,
Chris Green wrote: Can anyone point me at a simple set of "what cables fit in what trunking" table anywhere? I'd have thought it was a pretty fundamental piece of information but I can't find anything very useful anywhere. Even TLC don't seem to have anything. I'm specifically interested in the very small sizes like the Screwfix 12mm x 8mm trunking, can you fit a 1.5mm T&E in that? Neither Screwfix nor Toolstation seem to have the (approx) 25 x 10 trunking that I have a bit of, TLC have 16 x 10, would that be better for 1.5 T&E? Alternatilve I do have some 1sqmm (I think, it might be 1.5sqmm) single that I could use as the things I'm connecting (outside light, all plastic, PIR, timer switch) don't require an earth/CPC. That might fit in smaller trunking than 1.5T&E. De-rating isn't an issue, it's only going to be at most two LED lamps at the end of this, 25 watts total maximum. I'll put a 3A fuse in the FCU. 2.5 mm TW&E (which I have to hand) is 9.6 x 5.3mm exterior dimension. 1mm 7.2 x 4mm Don't have 1.5mm to hand. -- *If they arrest the Energizer Bunny, would they charge it with battery? * Dave Plowman London SW To e-mail, change noise into sound. |
#3
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Mini trunking capacity
On 15/12/2020 15:21, Chris Green wrote:
Can anyone point me at a simple set of "what cables fit in what trunking" table anywhere? I'd have thought it was a pretty fundamental piece of information but I can't find anything very useful anywhere. Even TLC don't seem to have anything. I'm specifically interested in the very small sizes like the Screwfix 12mm x 8mm trunking, can you fit a 1.5mm T&E in that? If its any help, the table he http://wiki.diyfaq.org.uk/index.php/Cables#Cable_Sizes Include the approx outer sheath dimensions for the various cable sizes. Note that there may be variation between brands. Neither Screwfix nor Toolstation seem to have the (approx) 25 x 10 trunking that I have a bit of, TLC have 16 x 10, would that be better for 1.5 T&E? Alternatilve I do have some 1sqmm (I think, it might be 1.5sqmm) single that I could use as the things I'm connecting (outside light, all plastic, PIR, timer switch) don't require an earth/CPC. That might fit in smaller trunking than 1.5T&E. De-rating isn't an issue, it's only going to be at most two LED lamps at the end of this, 25 watts total maximum. I'll put a 3A fuse in the FCU. Also there are a number of values of "fit". What you can get into a bit of trunking with a nice straight run of neatly stacked cables is not the same as what you can fit with the occasional twist, or need to change direction or go round a corner. Generally bigger than you think you need is better. It does not get significantly more fugly in larger sizes, and its much easier to use neatly with plenty of capacity to spare. -- Cheers, John. /================================================== ===============\ | Internode Ltd - http://www.internode.co.uk | |-----------------------------------------------------------------| | John Rumm - john(at)internode(dot)co(dot)uk | \================================================= ================/ |
#4
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Mini trunking capacity
John Rumm wrote:
On 15/12/2020 15:21, Chris Green wrote: Can anyone point me at a simple set of "what cables fit in what trunking" table anywhere? I'd have thought it was a pretty fundamental piece of information but I can't find anything very useful anywhere. Even TLC don't seem to have anything. I'm specifically interested in the very small sizes like the Screwfix 12mm x 8mm trunking, can you fit a 1.5mm T&E in that? If its any help, the table he http://wiki.diyfaq.org.uk/index.php/Cables#Cable_Sizes Include the approx outer sheath dimensions for the various cable sizes. Note that there may be variation between brands. Neither Screwfix nor Toolstation seem to have the (approx) 25 x 10 trunking that I have a bit of, TLC have 16 x 10, would that be better for 1.5 T&E? Alternatilve I do have some 1sqmm (I think, it might be 1.5sqmm) single that I could use as the things I'm connecting (outside light, all plastic, PIR, timer switch) don't require an earth/CPC. That might fit in smaller trunking than 1.5T&E. De-rating isn't an issue, it's only going to be at most two LED lamps at the end of this, 25 watts total maximum. I'll put a 3A fuse in the FCU. Also there are a number of values of "fit". What you can get into a bit of trunking with a nice straight run of neatly stacked cables is not the same as what you can fit with the occasional twist, or need to change direction or go round a corner. Generally bigger than you think you need is better. It does not get significantly more fugly in larger sizes, and its much easier to use neatly with plenty of capacity to spare. Yes, I quite agree, spare space always make it easier. However these really are only going to have one T&E cable in them, or maybe (as I said) a pair of singles. -- Chris Green · |
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