Crimping 240v Twin and Earth - Safe??

[ngunge]

Hello, I would like to know what the regs say on crimping 240v 1.5mm twin and earth (single core) using red straight through crimps...

Is it legal/safe/can it be done and pass inspection etc etc?

What can I do/use instead of using a chockblock (connnector block) to join 1.5mm twin and earth together in trunking?

Crimping, soldering, heatshrinking?

Thanks

 

[Adam W]

A crimp is never going to be as 'good' as a continuous length of cable, however in some situations it's the only option.

 

[Darkwood]

Crimps are bought without instructions but if you were to seek tech advice they would normally say its not for solid drawn cable, if you use a decent crimping tool it shapes the crimp so no metal fatigue is put on the crimp but for it to do its job the cable must also adapt to the crimping shape... this cant happen with solid core so NO! unless the crimp and also the crimping tool has been designed to do the job then stranded or fine stranded only.

 

[Knobhead]

This has always been a concern to me. No way will a standard ratchet crimping tool will form the crimp around a solid core. They are designed for stranded cores.
Look at the design of a crimping tool for large 4 sector solidal conductors, they form the crimp around the core.

 

[Guitarist]

Personally, I won't use crimps on solid core after seeing a lot of failures over the years (yes, properly done with a ratchet tool). The crimp simply doesn't form properly the way it does on stranded. IF you are going to use a crimp then go for "Ampliversal". They are the best I have found and have a serrated lining, tho not cheap.

 

[Knobhead]

I use Ampliversal crimps and an Ampliversal crimper. I would not use them on solid cores.

 

[Engineer54]

Use a good ratchet crimper with good crimps on solid cores and you will have a sound permanent connection. The trick is to have a ratchet crimper that deforms the solid core within the crimp.

 

[SKY]

WAGOS are the way forward.

 

[Silly Sausage]

Everything you need to know about crimping... (almost)
http://www.molex.com/pdm_docs/ats/TM-640160065.pdf

Didn't notice anything about solid cores though, just had a quick scan through.

 

[sizzler]

Note 2 on section 526.2 of BS7671 (aka 17th edition the wiring regs), which states: "Terminals without the marking R (only rigid conductor), F (only flexible conductor), S or Sol (only solid conductor) are suitable for the connection of all types of conductors

 

[Darkwood]

Note 2 on section 526.2 of BS7671 (aka 17th edition the wiring regs), which states: "Terminals without the marking R (only rigid conductor), F (only flexible conductor), S or Sol (only solid conductor) are suitable for the connection of all types of conductors

Welcome to th forum sizzler... to correct you; you need to read your regs quote again.its in reference to soldered connection, im confused to where your post is leading as the thread was discussing straight crimping.

 

[Knobhead]

Frankenstein along with this thread still lives. 2008 the thread started, why couldn’t it be left to rot?

 

[burrows1980]

So have people's views changed at all on crimping?

 

[amlu]

gas powered soldering iron, some solder and heatshrink, job done. maintenance free forever.

 

[Adam W]

Just keep firing up that re-animator and jump-starting this practically medieval thread....

Depending on the situation I'd use through crimps and heat-shrink as a 'get out of jail free card' as an absolute last resort, in preference to connector block.
It's not something I'd say is 'fine' though, just 'barely acceptable', and not in every situation.

 

[Rpa07]

Someone let @TonyMK11 know that the thread IS ALIVE!!!!
Saying that - when I started training and joined the forum, this was the very first question I had in my head and reading this gave me answers.