Wiska junction boxes and glands

[opps]

Hi all,

I purchased some Wiska 308 junction boxes and non-Wiska glands (16mm).

I have only used Wiska boxes once before and don't recall having a problem when trying to screw the gland in but I can't remember which glands I used. Should the glands have been larger than 16mm? I ended up trying to smash through the opening with a small screwdriver because I couldn't get the gland to screw in. I then discovered that I have cross threaded it and the otherwise unnecessary back nut will be a pig to fit.

I appreciate that Wiska claim that their boxes are IP whatever without needing to use a gland, but I would feel more confident using compression glands. I am also aware that their sales patter says that back nuts are needed because the knockout holes are threaded, but in my case the one gland that I have managed to fit sits at a slightly jaunty angle..

 

[flameport]

Holes are usually M20, not 16.

 

[opps]

Holes are usually M20, not 16.

Thanks Flameport, that might explain why I couldn't screw them in. I had intended to buy the Wiska glands but Amazon had a delay on them so I purchased the cross sale recommendation.

Mea culpa.

 

[crystal ball]

I find CPC quite good for wiska stuff

 

[opps]

Just checked the specs, yup they should have been M20 so Amazon are delivering some today.

As an aside. Each of the junction boxes are supplied by very old T&E. I will be drilling holes in the back of the boxes for the cables and squirting in some silicone. I do however recall seeing glands which have a rectangular (rather than round) cable insert collars. Does anyone know where they can be sourced. There may be the odd occasion where I cannot simply insert the T&E in to the back of the box and many need to feed in in via a gland on the bottom of the box.

Tnx.

 

[DetlefSchmitz]

https://www.tlc-direct.co.uk/Products/TLTEG2.html
Is this what you mean?

 

[opps]

https://www.tlc-direct.co.uk/Products/TLTEG2.html
Is this what you mean?

that's it, many thanks.