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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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waterproof junction box
I'm installing a LED floodlight outside below a wooden soffit. It would be neat for the cable to go up to the soffit into a junction box where the 1mm2 lighting can enter from the loft. So in effect like a ceiling rose, but waterproof. I haven't found a j/b that expects a cable entry / exit from its mounting surface. But I bet one of you have. -- let the dog out. |
#2
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waterproof junction box
On 07/05/2019 21:34, Mike wrote:
I'm installing a LED floodlight outside below a wooden soffit. It would be neat for the cable to go up to the soffit into a junction box where the 1mm2 lighting can enter from the loft. So in effect like a ceiling rose, but waterproof. I haven't found a j/b that expects a cable entry / exit from its mounting surface. But I bet one of you have. -- let the dog out. If you mean you're going to drill the soffit and fit the JB under the hole, there might be a problem with condensate running down into the box. Personally I'd want to fit a box on the wall and take all the cables in via its bottom surface. Bill |
#4
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waterproof junction box
On 07/05/2019 21:34, Mike wrote:
I'm installing a LED floodlight outside below a wooden soffit. It would be neat for the cable to go up to the soffit into a junction box where the 1mm2 lighting can enter from the loft. So in effect like a ceiling rose, but waterproof. I haven't found a j/b that expects a cable entry / exit from its mounting surface. But I bet one of you have. -- let the dog out. A search for "adaptable box" might be useful but, as others have said, it would be far preferable to enter from below (ooo, errr, missus!) using cable glands and to have a slight loop so that the box/gland isn't at the low point. |
#5
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waterproof junction box
On 08/05/2019 03:55, Bill Wright wrote:
On 07/05/2019 21:34, Mike wrote: I'm installing a LED floodlight outside below a wooden soffit. It would be neat for the cable to go up to the soffit into a junction box where the 1mm2 lighting can enter from the loft. So in effect like a ceiling rose, but waterproof. I haven't found a j/b that expects a cable entry / exit from its mounting surface. But I bet one of you have. -- let the dog out. If you mean you're going to drill the soffit and fit the JB under the hole, there might be a problem with condensate running down into the box. Personally I'd want to fit a box on the wall and take all the cables in via its bottom surface. Bill You could fit a plastic cable gland to the back of the box and make the soffit hole big enough to accomodate it. I always add a pack of dessicant to outside boxes (but thats just me). |
#6
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waterproof junction box
On 07/05/2019 21:34, Mike wrote:
I'm installing a LED floodlight outside below a wooden soffit. It would be neat for the cable to go up to the soffit into a junction box where the 1mm2 lighting can enter from the loft. So in effect like a ceiling rose, but waterproof. I haven't found a j/b that expects a cable entry / exit from its mounting surface. But I bet one of you have. How about: - 63mm hole in soffit - round, plastic dry liner box* - Wago connectors in the box - hole drilled in centre of box cover* - with grommet - for flex to light to exit /but/ loose enough to allow any condensation in box to drain *I've only seen white plastic so may need application of paint to match soffit -- Robin reply-to address is (intended to be) valid |
#7
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waterproof junction box
On 07/05/2019 21:34, Mike wrote:
I'm installing a LED floodlight outside below a wooden soffit. It would be neat for the cable to go up to the soffit into a junction box where the 1mm2 lighting can enter from the loft. So in effect like a ceiling rose, but waterproof. I haven't found a j/b that expects a cable entry / exit from its mounting surface. But I bet one of you have. -- let the dog out. I can't think of the name, but you can also get some that come with a gel filler for waterproofing. I've even got some somewhere, bought when I thought they sounded like a good idea. |
#8
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waterproof junction box
newshound wrote:
I can't think of the name, but you can also get some that come with a gel filler for waterproofing. wiska? |
#9
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waterproof junction box
On 08/05/2019 11:35, Andy Bennet wrote:
You could fit a plastic cable gland to the back of the box and make the soffit hole big enough to accomodate it. I always add a pack of dessicant to outside boxes (but thats just me). I used to do that with cameras for CCTV but of course the bag only absorbs so much. Bill |
#10
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waterproof junction box
On Tuesday, 7 May 2019 21:34:08 UTC+1, Mike wrote:
I'm installing a LED floodlight outside below a wooden soffit. It would be neat for the cable to go up to the soffit into a junction box where the 1mm2 lighting can enter from the loft. So in effect like a ceiling rose, but waterproof. I haven't found a j/b that expects a cable entry / exit from its mounting surface. But I bet one of you have. Cables must exit at the lowest point otherwise it will typically fill with water over time. One way to avoid that is to fill it with something totally waterproof, eg bitumen. NT |
#11
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waterproof junction box
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#12
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waterproof junction box
On 07/05/2019 21:34, Mike wrote:
I'm installing a LED floodlight outside below a wooden soffit. It would be neat for the cable to go up to the soffit into a junction box where the 1mm2 lighting can enter from the loft. So in effect like a ceiling rose, but waterproof. I haven't found a j/b that expects a cable entry / exit from its mounting surface. But I bet one of you have. -- let the dog out. Ive used a waterproof in-line connector in the past to connect a LED floodlight. They come with a inclusive set of different size sealing washers/glands to suit a variety of different size cables https://www.tlc-direct.co.uk/Products/KBJB002.html Also waterproof junction boxes https://www.tlc-direct.co.uk/Main_In...nts/index.html. Note: I replaced a friends outside light which had been wired with normal grey mains cable a few years before. The insulation was already cracking presumably as a result of being exposed to UV. It was replaced with Hi Tuff cable. -- mailto : news {at} admac {dot} myzen {dot} co {dot} uk |
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