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

 

[Spudmiester]

A crimped joint doesn't need to be accessible and done right should not fail , jb,s and connector block must be accessible ........ Well thats what i was told the other week when i was on the 17th course

Aahhh. Now we know. Very interesting !

 

[wayne]

A crimped joint doesn't need to be accessible and done right should not fail , jb,s and connector block must be accessible ........ Well thats what i was told the other week when i was on the 17th course

reg526.3(iv)says he's right .still needs to be in a joint box

 

[andypandy]

i have been told that crimped connections do not have to be accessible as the connection is counted as a solid joint so should not increase or decrease any testing reading that r done on the circult they r fitted to

 

[M8147UK]

why not just use the terminal free connectors which use the spring clip method they do not need to be accessible if the are no terminals with screws

 

[Spudmiester]

reg526.3(iv)says he's right .still needs to be in a joint box

What about being in trunking (as in the metal 4x4 stuff) That must count as mechanical protection to be sure !

 

[andypandy]

the connections you r talking about these r the new ones that come in different colours

 

[wayne]

What about being in trunking (as in the metal 4x4 stuff) That must count as mechanical protection to be sure !

not exactly a bs rated joint box

the connections you r talking about these r the new ones that come in different colours

eh???

 

[wattsup]

If working for the water board, power stations large steel works, mines and quarries etc, anywhere in fact with a clerk of works and a spec. Solid core cannot be crimped. I know because once we had to rip about 1000 metres of 1.5 7core out, because it was solid core and all connections out in the field were crimp connections. And thinking about other places I've worked never have crimped solid core before.

We didn't know it was solid core until connection time, nor did the gaffer, tried to bluff through..no chance it was spotted quickly. Wholesaler at fault, or so was told to us -;
At the time I wondered why not, ask the clerk of works...he looks at me like mainwaring looks at pike..Because solid core breaks under vibration at weak point on crimp, because of expansion and contraction eventually losens the joint, stranded does not..and your boss should know why...oops

 

[Shakey]

reg526.3(iv)says he's right .still needs to be in a joint box

c'mon Wayne, thats not what 526.5 says.......

not exactly a bs rated joint box

no, Wayne, trunking isnt a BS rated joint box, but the regs doesnt call for a BS rated joint box does it!

 

[wayne]

c'mon Wayne, thats not what 526.5 says.......



no, Wayne, trunking isnt a BS rated joint box, but the regs doesnt call for a BS rated joint box does it!

526.5 why bring that into it ? ,sorry "an appropriate product standard "aka bs/ ce

 

[LukeScotty]

Come on shakey, thought u might have typed a real long post about this, the thing that wattsup has said sounds correct, (great explanation by the way) but is there any where in the regs which says you can only crimp stranded? or is it just good practice/bad practice?

Because solid core breaks under vibration at weak point on crimp, because of expansion and contraction eventually losens the joint, stranded does not

I

 

[montybaber]

To my knowledge theres nothing on paper just what I was always taught... but then I always bootlace ferrule stranded flex connections in FCU's etc and I have never seen any other sparkie doing that either,so I suppose its just each to their own.

 

[LukeScotty]

so crimping solid cores aint against the regs, it just can be seen as bad pratice ?

 

[wattsup]

As a footnote, mi, if lugs are needed have to be soldered. The big stuff 25mm and beyond is like working with 6 inch nails, arnie would have trouble forming it, and the dimwit manufacturers give you no room for error in their termination enclosures. Sometimes it is next to impossible and a further splitter box is needed

>>so crimping solid cores aint against the regs,<<
I don't think it is, but very bad practice

 

[Burnt Fingers]

So, and sorry because this is probably off the topic now, if you want to join say a 2.5, can you use spring loaded multiconnectors like Helacon Plus range - in a box, which can then be inaccessible?

However I like crimping, its therapeutic.