This continues from the "How to remove knockouts....." thread. I'm beginning to think I must be incompetant or something but I've never had so much trouble before with a relatively simple requirement.
I now have a Wiska outdoor box and their spring earth clips.
The knockouts work! That's one improvement on the Toolstation box. Simply screwing a gland into a hole in the box pushes the knockout out, so that's one hurdle overcome.
However, it's all downhill from here on.
This is a replacement box, the old one got damaged, so the wires are already in place and can't be moved much as they disappear into the ground. So this produces problem one, you have to remove the gland from the SWA, screw the gland into the box and then re-do the SWA clamping into the gland. It's possible but it's not easy, I'm just glad the weather is reasonably warm. It would be much easier to terminate the cables first and then fix them into the box with a nut. I think maybe I'll have to do this, but see below.
Then on to the Wiska 'Earthing Springs':-
So, back to square one, how to replace an outdoor connection box with three M20 SWA glands into it? I think I need to go back to a plain box without threaded holes as one can then secure the glands with a nut **after** fixing the gland onto the cable. However that raises a couple of issues:-
Can one get brass 20mm washers for the glands, and brass nuts? The ones I took apart from the old broken box were steel and very corroded.
How to tighten the nuts given the limited accessibility, I guess a custom made box spanner - short box with a handle - might be the best answer.
Any/all advice (and sympathy) welcome! :-)