Termination block/bus bar

[Nozzle]

I'm wiring a "distribution" box for my UFH controls. 4 Wired room thermostats 1 wireless receiver all need supply and control coming together in one box with glanded cable relief, then using suitable multicore cable (YY or similar) bring all the control and power together in the same cable all the way to the UFH control box. Live, Neutral, Earth and 7 off SwL. (As that's how many solenoids I have available on the manifold rather than how many thermostats).

I'll use something like this to maintain earth integrity
https://www.toolstation.com/shop/p62785

I want something like a cross between this and choclate blocks for the Live and Neutrals. Like a Busbar in a CU, but without needing to screw breakers to it. A bar of brass with a load of holes and screws and wrapped in insulating plastic... Protection is dealt with at the UFH control box which is internally fused, both it's own supply and for external connections.

CPC Farnell has plenty to choose from, but nothing exact. Perhaps I'm using th wrong search term - any suggestions please?

Nozzle

 

[Adam_151]

You'll find that earth block is generally best suited for cables circa 10/16mm² ,Terinating cables of the size used for control wiring in it would not be ideal.

You'd best of using din rail terminals for everything , They come in a range of sizes, put as many as you want on the rail and then link together with the appropiate (you need to match manufacturer, as well as size), You'll need end plates at the end of the run (the smaller terminals are open on one side) and also end stops to stop them sliding, for earths use the earth blocks, these dont need the linking bar, they tighten down onto the rail and link that way.

A good wholesaler should have a reasonable range on the shelf, but if not the likes of rs (and probably the other similar suppliers) would do them next day, prices might be a bit higher though?

 

[Nozzle]

Thanks for your input though I think using DIN rails and terminal blocks like those might mean the housing is way bigger than it needs to be. Unless there's a minature version of DIN rails??

I think there is no product to do what I'm trying to achieve. Which makes me wonder why that might be..

I'll have to go for something like this
https://cpc.farnell.com/camdenboss/...-fused-no-earth/dp/CN19155?st=fused terminals

And then connect each terminal together on one side with a Brown and Blue cable respectively. It's a bit sloppy though, plus there's no need to have neutral and live fused. If only they did these but each terminatl were electrically connected.

Nozzle

 

[Lectrician]

Use din rail terminals. The neutral and earth ones can be linked with bridging kits.

 

[Adam_151]

The din rail terminals are not particulay big, what side enclosue did you have in mind? I cannot imagine you could make it any smaller with the fused input connector blocks!

 

[Nozzle]

Update 15mm x 5mm Din rails.... could well be an option!

Nozzle

 

[Nozzle]

https://cpc.farnell.com/entrelec-uk...per-kit/dp/CN12829?CMP=CPC-ebooks-BIGBOOK2015

For the avoidance of doubt - when I use the terminal jumper kit, do the jumpers go in the top/bottom of the terminal block or is there an extra contact in the front? (Orientation written as if the DIN rail is mounted horizontally in the back of a cubicle). In either case, is it the intention that the jumper is then potentially open to contact with live parts - or is there a cover plate than goes over them - i.e are the name/number tags compulsory as they are the insulation.

It works out pretty expensive when it's a couple of quid per terminals

Nozzle

Edit, I think the jumper kit is screwed in from beind before mounting groups of terminals together on the rain then marking separate isolated sections with a plastic terminal partition. I assume there's a small piece of the housing I snap off/cut on the rear that allow separate blocks to be couple electrically using the jumper kit. That would otherwise be in the way.

 

[OwainDIYer]

DIN rail mounting wagos
https://www.tlc-direct.co.uk/Products/WA500.html

Or glue wagos to the bottom of whatever box you do use.

 

[Lectrician]

https://cpc.farnell.com/entrelec-uk...per-kit/dp/CN12829?CMP=CPC-ebooks-BIGBOOK2015

For the avoidance of doubt - when I use the terminal jumper kit, do the jumpers go in the top/bottom of the terminal block or is there an extra contact in the front? (Orientation written as if the DIN rail is mounted horizontally in the back of a cubicle). In either case, is it the intention that the jumper is then potentially open to contact with live parts - or is there a cover plate than goes over them - i.e are the name/number tags compulsory as they are the insulation.

It works out pretty expensive when it's a couple of quid per terminals

Nozzle

Edit, I think the jumper kit is screwed in from beind before mounting groups of terminals together on the rain then marking separate isolated sections with a plastic terminal partition. I assume there's a small piece of the housing I snap off/cut on the rear that allow separate blocks to be couple electrically using the jumper kit. That would otherwise be in the way.

They’re screwed into the front, and remain recessed below the height of the front, so touch proof. No more exposed than terminal blocks. You can see in the pic the threaded hole in the centre.

 

[Nozzle]

I'm going to pick up some of these - as they're small and fit on a 15mm DIN rail
https://cpc.farnell.com/entrelec-uk/120-491-11/terminal-block-din-35a-blue/dp/CN12813

which look slightly different - the screws don't have an insulated cap, and the terminal block doesn't have the recess in the "wall" to the neighbouring block. It does look like it has s snap-off part though.

Nozzle

 

[ban-all-sheds]

any suggestions please?

Get an electrician.

 

[JohnW2]

DIN rail mounting wagos https://www.tlc-direct.co.uk/Products/WA500.html

It says ...

Din Rail Mounting Carrier for Lever Connectors for WAGOBOX

I think that I must be missing something - what on earth have these things got to do with a Wagobox?

Kind Regards, John

 

[ban-all-sheds]

https://www.connexbox.com/search/?q=din

https://www.connexbox.com/shop/wagobox-and-din-rail-enclosures

 

[Nozzle]

Get an electrician.

That's what I like about you, always so much to contribute. Invariably so helpful too.
Nozzle

 

[Nozzle]

It says ...


I think that I must be missing something - what on earth have these things got to do with a Wagobox?

Kind Regards, John

They appear to have nothing to do with WagoBOX, I agree. Just a way to affix ones Wago Block to a DIN rail.

Nozzle