Do any exist, 35mm or greater, with knockouts in the divider?
DUAL flush boxes
- Thread starter ban-all-sheds
- Start date
Only ever seen 35mm versions of them - All wholesalers stock them, they are regularly used behind TV's in guest houses for single socket and aerial, and often used for immersion tanks with peak and off peak immersions. Also just used them in a hotel to give be able to use 2 x 2gang switches vertically above each other, rather than using a 4 gang switch due to issues of width between door frames.
You need to ensure you get them level, and fixed well (to prevent plasterer from de-leveling!). This is because they do not have adjustable lugs usually.
You need to ensure you get them level, and fixed well (to prevent plasterer from de-leveling!). This is because they do not have adjustable lugs usually.
Ah.
Now that Screwfix one doesn't have a divider:
I actually want one (possibly) with a divider:
but I'd need a KO in the divider.
To assuage people's curiosity
:
I need to join an external SWA cable to an internal T/E circuit. Internally there will be a 20A DP switch, T/E from CU into the supply terminals, SWA cores into the load.
I was planning to gland the SWA into a Masterseal JB on the wall outside (I have solid floors, so I can't just stick an adaptable box under the boards), and bring the inner part of the SWA through the wall.
I was trying to come up with a way to do it without a box on the wall outside, and I thought it might be feasible to bring the SWA through, into one side of a dual box behind a blanking plate, gland it on the divider, and have the DP switch on the other side. The internal location is unobtrusive, so a blank next to the switch will be OK.
I've got some dual boxes in the loft, but I can't be @rsed to go and see if they have KOs, and offer up a gland, and besides, it's freezing up there...
Now that Screwfix one doesn't have a divider:
I actually want one (possibly) with a divider:
but I'd need a KO in the divider.
To assuage people's curiosity
:I need to join an external SWA cable to an internal T/E circuit. Internally there will be a 20A DP switch, T/E from CU into the supply terminals, SWA cores into the load.
I was planning to gland the SWA into a Masterseal JB on the wall outside (I have solid floors, so I can't just stick an adaptable box under the boards), and bring the inner part of the SWA through the wall.
I was trying to come up with a way to do it without a box on the wall outside, and I thought it might be feasible to bring the SWA through, into one side of a dual box behind a blanking plate, gland it on the divider, and have the DP switch on the other side. The internal location is unobtrusive, so a blank next to the switch will be OK.
I've got some dual boxes in the loft, but I can't be @rsed to go and see if they have KOs, and offer up a gland, and besides, it's freezing up there...
The SFX ones that I have had do have a divider. So to TLC's http://www.tlc-direct.co.uk/Images/Products/size_3/AP636.JPG
Neither have a KO in them, You'd need to get yr 20mm holesaw out for that, methinks.
Neither have a KO in them, You'd need to get yr 20mm holesaw out for that, methinks.
The pic doesn't show a divider, but they all come with one. Some are removeable with a screw, but most are 'popped' out.
The screwfix one is an Appleby, which is the same make we use.
The screwfix one is an Appleby, which is the same make we use.
You want to gland into the divider? Am I reading that correctly? That will never work
I am not exactly sure that I understand fully what you are aiming at, but a suggestion....I do not use masterseal boxes though, so I assume the earth tag of the SWA will be fitted and bolted through the junction box. The inner sheathing can then be opened and the earth looped in and out of the the earth tag fixing. The other uncut cores c/w sheathing can be passed through the wall directly into the 20A switch box.
The cable entering the box inside the property will not need a gland, maybe just a grommet.
The cable entering the box inside the property will not need a gland, maybe just a grommet.
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Ban, that one you pictured...You can remove the divider, drill yourself a 20mm hole & grommet it.
Tell me more - may save me the the job of finding that out for myself.You want to gland into the divider? Am I reading that correctly? That will never work
It'd be a 20S gland - the width across the flats is 24mm and across the points is 27mm, so right now no immediately obvious reason why it wouldn't go in a 35mm box. Being internal there'd be no need for the "dog's ****", and I wasn't so sure that I couldn't bend 2.5mm 3-core within the space that I thought it wasn't worth further investigation....
Well, actually, shock horror, I wasn't going to earth the armour at that end.
I know, I know, but:
1) Masterseal boxes are, obviously, plastic, so the box needs no earth.
2) When it leaves the box, the cable will not be buried, or in a location where it's at risk of damage.
3) It will run at most 0.5m to a 2nd enclosure (metal) where it will be properly glanded, i.e. banjo or Piranha nut to earth the armour.
Safe enough, I reckon.
S
saxondale
somebody "quote" this so he sees it
why not just gland to one of the rear knockout of a single box ?
why not just gland to one of the rear knockout of a single box ?
BAN,are you sure you can get a good enough bend radius on the cableto turn it in?
them knockouts in the center (the whole bit) do pop out fairly easy,i can see it getting a bit mashed.cant you use a back or side entry on the box and just run the cores through the center knockout?
i think thats a bettewr job and no pressure on the steel wire
or have i totally mis understood
them knockouts in the center (the whole bit) do pop out fairly easy,i can see it getting a bit mashed.cant you use a back or side entry on the box and just run the cores through the center knockout?
i think thats a bettewr job and no pressure on the steel wire
or have i totally mis understood
Could you make a box using, two single boxes.
joined with 2 long reach bushes with 2 lockrings spaced between , and another two lockrings , to lock the boxes together.
This will give you choice of two holes to run the inner armoured through.
Using the outer of the back holes, 2.5 mm 3core inner armoured would I think turn in ok.
joined with 2 long reach bushes with 2 lockrings spaced between , and another two lockrings , to lock the boxes together.
This will give you choice of two holes to run the inner armoured through.
Using the outer of the back holes, 2.5 mm 3core inner armoured would I think turn in ok.
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