Replacing Extractor Fan, Extending Cable

[sfm]

I have an extractor fan that I am replacing with a new one. However, the cable entry/terminal positions differ such that the existing 1mm 3core+earth cable is only 2cm too short to screw in and I cannot run a new one as it is embedded within the wall.

Would it be acceptable to use some red butt crimps, heat shrink and short lengths of cable to extend the cable? The crimps would be within the extractor fan itself and there is space for the crimps.

Does this count as 'altering' an existing circuit?

 

[Andy™]

crimp, but doesnt need heatshrinked if its within the fan enclosure

 

[Marvo]

I'd personally go with uninsulated ferrules and heat shrink to insulate, I find they give a far better joint than those pre-insulated red butt connectors especially with it being an AC3 load and probably high start current. I doubt it would be classed as a circuit alteration because it's all on the load side of the isolator assuming there is one.

 

[Andy™]

3c & E... sounds like a bathroom fan... not exactly an AC3 load with high start currents...

 

[Blue Duck]

3c & E... sounds like a bathroom fan... not exactly an AC3 load with high start currents...

:slap

 

[batty]

Use wagos its a two minute job then.

 

[Marvo]

Ahhh, the OP didn't say bathroom and when I saw the 3-core +e I pictured a commercial 3-phase extractor so please ignore my last post.