Using Wiska boxes with Cable Glands

Probably a very silly question, but when screwing a cable gland directly into a Wiska box, is it necessary to remove the rubber membrane from the hole first?

No instructions came with the box, and I can't find any instructions on the Web.

Reason I ask is that the gland seems to stick out a very long way from the box, with a lot of exposed thread, and looks unsightly.

There is a picture of a Wiska box with a gland screwed into it on the Wiska web site, but the photo is taken from such an angle so you can't actually see how far the gland sticks out.

Thanks in advance.

 

Hmmm. I tried screwing the gland home, but it simply smashed the entire rubber seal off the Wiska box (leaving nothing to seal around the gland), and before it was fully screwed in, it started to foul one of the screw mountings in the bottom of the box. It will not screw all the way in without modifying the Wiska box.

Yes, it is a plastic gland, and I purchased the correct gland as stated on the TLC web site.

 

Ah ha! I think I've got to the bottom of the problem.

The picture of the gland shown on the TLC web site looks totally different from the gland they have sent me. The one pictured (EK 254B) looks like it would work with the Wiska box.

That is the item I ordered, but what I've actually received doesn't look anything like the picture. They've probably just picked the wrong item.

 

Thanks seneca2 for the advice.

If the membrane is supposed to pop off then that's ok, but I think the problem with the glands they have sent me is that the thread is just too long. It won't go all the way in because it hits one of the screw holes sticking up from the bottom of the Wiska box.

With the type of gland pictured on the TLC web site, it looks like it would work perfectly.

A couple of pictures to illustrate the problem:

http://www.crumblenet.co.uk/wiska/

 

But they don't work, sinewave. The second type will not screw all the way in to the Wiska box. There are a number screw positions which stick up from bottom of the Wiska box for mounting the terminal block, and one of these gets in the way of the gland as it screws in. The thread needs to be about 5mm shorter, then it would work.

 

Absolutely sinewave, and to be honest that's what I'll do!

But the whole point of these Wiska boxes is that they are supposed to be quick and simple to install - a property of which they are robbed when you have to start sawing the glands up to get them to fit

Also, I'm not convinced the thread does seal properly - it seems very loose.

All things considered, I am rather unimpressed with the Wiska box. Maybe it would be better with compatible glands, though.

 

Yes, I know what you mean about the SWA earthing problem. My plan was to use SWA up to the Wiska box, then onwards in NYY-J, but I've now half a mind to just use NYY-J for the whole job.

Thanks for all the advice!

 

Following on from this, I have been in an e-mail dialogue with Wiska.

Apparently, there is a special Wiska gland which, to quote the man from Wiska "...is designed with a small angle on the connection point between the gland and the box. This ensures a tight seal is created between the two rather than relying on an additional gasket which can get trapped or perished. This way the WISKA gland gives a better seal than our competitors."

So it would appear that using standard glands with Wiska boxes will not result in a proper seal.