Reducing 10mm ferrule

Luka · 2025-01-08T17:16:01+0000

Can some please advise how to reduce a 10mm cable ferrule to 6mm ferrule size? I have an old CU where neutral terminal would not take such big ferrules. Im not worried about current capacity drop as circuit is fed from 30A MCB anyway. I will change it to 40A or 50A when I replace CU and install the correct ferrule then. Optionally, can I just remove some strands (not too many, just enough to fit into 6mm cable ferrule (its 10mm HO7RNF)?

Tom256 · 2025-01-08T18:15:22+0000

No you do not remove strands.

If you have no other option use pin ferrules then heat shrink over the crimp

[ElectriciansForums.net] Reducing 10mm ferrule

mainline · 2025-01-08T18:19:44+0000

Luka said:
Can some please advise how to reduce a 10mm cable ferrule to 6mm ferrule size? I have an old CU where neutral terminal would not take such big ferrules. Im not worried about current capacity drop as circuit is fed from 30A MCB anyway. I will change it to 40A or 50A when I replace CU and install the correct ferrule then. Optionally, can I just remove some strands (not too many, just enough to fit into 6mm cable ferrule (its 10mm HO7RNF)?

You could have just used smaller cable.

Tom256 · 2025-01-08T18:23:57+0000

mainline said:
You could have just used smaller cable.

Yeah there is that also.

Luka · 2025-01-08T18:50:19+0000

Tom256 said:
Yeah there is that also.

This is what I was considering but I was not sure if this is safe in my situation. I have already 10mm2 cable run to my garage. Like on the picture (please see below). I discovered this problem when making the final wiring to the CU. Everything is already set and I cannot change too much. What I could change is running 6mm2 cable instead of 10mm2 (either H07RNF or 6181Y) from the CU to the JB. Is it safe to do that if I feed it from 30A MCB instead of 40A?