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cable jointing - uneven inline butt crimps?

jbrameld

Does anyone know of a good method of dropping cable sizes down in limited space inside a panel.

This is related to my earlier post, where for example I need to upsize cables in trunking to account for grouping factors, but the larger cables on reaching the panel need to be reduced so they fit into the terminals on the breakers and/or the outlets as relevant.  

A common method as I understand it is to have a termination chamber with terminals/short busbar for each connection but we have limited space in the already manufactured panels to do this.  I have seen some DIN-rail terminals with dual studs on that might work if we can get some rail fitted into the box.

My ideal would be an inline butt crimp that has say 240mm2 on one side and 95mm2 on the other (or other various smaller combinations).  Does anybody know of any such things - or anything else nifty for this sort of thing?

Thanks.

Jason.

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  • +1

    OK there is something odd here. Klauke website suggests they do up to 95mm2, but if I post their contact info the post gets blocked.

    Original post, but without the contact info

    Before you splice on short lengths of thin cable, are there any cases where you can you use pin lugs at all ?

    https://uk.rs-online.com/web/p/crimp-pin-connectors/8092366

    Can be a neat way to terminate cable in to terminals where it would otherwise not easily fit.  Big ones need hydraulic crimpers Not seen as large as 240mm but certainly can be  done for 35mm and down, large ones made by Klauke and probably other makers too * . Can look very nice with a bit of heatshrink on after crimping.

    Otherwise where it really will not fit and you must use in-line crimps, then size the crimp for the larger core, and back fill the loose fitting side so that it is nearly full and compresses tightly.

    DNOs  use a crimp large enough to take both cores side by side,  and run them parallel, so that the end of each core goes right through emerges a few mm from opposite sides, and then crimp the lot, I'm not sure what those are called.

    Mike

  • +1 in reply to mapj1

    I'll have a go at posting a link just to see what happens...https://www.klauke.com/gb/en/reduction-sleeves-hu

    On this page the smallest 240 reduces to 120. There is also a 120 to 95, but no idea whether they would recommend using two reducing sleeves to get from 240 to 95 that way.

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