How to weatherproof a pre-terminated RJ45 cable? Cable gland that's large enough for plug leaves too much space around cable

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I'm having a EV charger installed, and it optionally can use ethernet.

The manual has this to say about it:

Screenshot 2024-04-07 at 18.28.12.png

The diameter of that cutout is about 20mm - but I can't find a gland that would both be able to fit an RJ45 plug, which is 12.2mm (even without clip), while also being narrow enough for the cable, which is 4.8mm. The smallest one that would work is called a "PG19" apparently, but the smallest cable size it fits is 12mm, leaving just over 7mm gap.

I could probably leave this to the electrician, but I think he usually only does the Wifi option. I thus want to pre-order any such gland so it's ready on the day.

I really don't want to terminate a solid-core cable inside (which would be a nightmare for maintenance/replacement), so ideally just want to use a short patch cable.

What are the options here? I've heard some people use electrical tape to bulk-up the diameter of the cable, but are there other options?
 
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There do exist glands designed for pre-terminated cables, but they seem to be quite a specialist item, not something you can easily find in the local wholesaler.

I suspect most would just crimp the connector after passing it through the gland. You can still remove the gland as a whole if you need to remove the EV charger.
 
Reterminating the connector on the cable is the cleanest option all day long.
 
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Harry Bloomfield said:
www.electrical4less.co.uk

Wiska SPRINT ESKV-RDE 20 BK Polyamide Cable Gland with Reduction Sealing Insert

Upgrade your cable management system with the Wiska SPRINT ESKV-RDE 20 BK Polyamide Cable Gland. Its versatile design and superior sealing capabilities make it the perfect choice. Shop today!
www.electrical4less.co.uk www.electrical4less.co.uk
Click to expand...

Thanks - just to confirm, the dimensions I'm looking at here are the "cable diameter min/max", being 4mm/13mm respectively? So the 12mm plug will go through the hole ok, and the gland will close down to the 4.8mm of the cable?
 
hllns said:
Reterminating the connector on the cable is the cleanest option all day long.
Click to expand...
Agree - but it's a 25 meter run that I'll be doing (installer is doing the electrical work, obviously), which necessitates solid core CAT5.

And I despise terminating solid core directly to plugs - I've managed to do it with a couple of PoE connections to video doorbells, but it took me several goes. Whereas terminating in a box with a punchdown connector much more reliable, with a short and easily replaceable pre-terminated patch cable is much easier.

Potentially I could use a small keystone in the housing, but then I'd need a super short patch cable. Or perhaps terminating solid core to a plug is fine with the right tools? I've read it's not reliable, but maybe that's wrong.

In any case, @Harry Bloomfield seems to have found something suitable?
 
marcosscriven said:
Thanks - just to confirm, the dimensions I'm looking at here are the "cable diameter min/max", being 4mm/13mm respectively?
Click to expand...

The description seems to suggest so.

marcosscriven said:
So the 12mm plug will go through the hole ok, and the gland will close down to the 4.8mm of the cable?
Click to expand...

No, will not accommodate the 12mm plug. You have to drill a slightly small hole in the reduction insert, then cut a slot out.
 
Harry Bloomfield said:
The description seems to suggest so.



No, will not accommodate the 12mm plug. You have to drill a slightly small hole in the reduction insert, then cut a slot out.
Click to expand...
Ohh I see. So I could cut that insert so the cable goes in sideways? I assume that would be weather proof enough once compressed within the gland?
 
plugwash said:
There do exist glands designed for pre-terminated cables, but they seem to be quite a specialist item, not something you can easily find in the local wholesaler.

I suspect most would just crimp the connector after passing it through the gland. You can still remove the gland as a whole if you need to remove the EV charger.
Click to expand...
I've not been able to do this reliably before, with solid core. It seems to not be the done thing anyway, or at the very least controversial: https://ipcamtalk.com/threads/have-...erminating-solid-core-cat5-6-with-rj45.38583/
 
marcosscriven said:
I've not been able to do this reliably before, with solid core. It seems to not be the done thing anyway, or at the very least controversial: https://ipcamtalk.com/threads/have-...erminating-solid-core-cat5-6-with-rj45.38583/
Click to expand...
My experiance has been if the crimp connector is designed for solid core it works fine. The last load I bought were some TUK brand ones from CPC that said they were compatible with both and I don't recall having any problems with them.
 
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