Cable Crimps

[roys]

Hi Sparks,

Seen a lot of mention on other threads regarding the use of crimps on T&E cable (I persume). So, I was always taught that you should never crimp solid drawn copper (not stranded) as it can cause hot spots or weak spots. We are only ever allowed to crimp stranded cores and we must use ratchet crimping pliers.

Is this just an industrial rule. What do you all think?

Cheers Steve

 

[Lee321]

crimping solid is fine in my book

 

[spinlondon]

Ratcheting Crimpers is a must.

 

[Megaohm7]

No probs with crimping solid core as long as a decent pair of ratchet crimpers have been used . Guiness Drink

 

[Lee321]

use a quality crimper

not^ :coat

 

[septiclecky]

use a quality crimper

not^ :coat

Best place for that is in the bin.

 

[tom1]

stay out my tool box

 

[Andy™]

scrap bin should be the only place they can live

 

[Lee321]

stay out my tool box

:^O

 

[green-hornet]

There have been many investigations into cable terminations, including crimp(by compression).

They found that any termination be it at point of use ie:- socket outlet, light fitting,junction box, is no less effective providing correct connections are provided.

A ratchet crimper is a must as this affords the correct compression on any cable joint.

Never over tighten any connection, as this can have detrimental effects on any cable joint.

I did read an article where a specific torque was given for all terminations in a consumer unit. However I have lost the paper, and can not find the link.

 

[Andy™]

most manufacturers instructions for CU's probably say the torque req'd, but 1: i dont have a torque screwdriver, and 2: i dont know if this really is in the instructions since i dont read them....

 

[elvis]

I'm not too happy crimping solid cores either (although I have.) Was a maintenance spark for some years and we would never crimp solid core cables, particularly in any environment where they may be exposed to vibrations.

Sure there will be summink in the regs about it??

 

[batty]

Why not use wagos or similar they are designed for solid cores.

Batty

 

[tom1]

when did crimps on solid core become an issue arnt they a classed as permenant connection

 

[Bacon]

I use AMP crimps and have to send various crimped cables away for testing and checks once every 6 months.

Crimps tools i use are.

http://uk.rs-online.com/web/search/searchBrowseAction.html?method=getProduct&R=0817325&cm_vc=av_uk

http://uk.rs-online.com/web/search/searchBrowseAction.html?method=getProduct&R=0445885

 

[Evans Electric]

I didn't know it was an issue !! Ratchet crimpers are recommended , I believe , to override the grip strength of the individual and give a constant to the equation.

I use those cheapo crappy things pictured but only for cropping 3.5 screws, quite useful as they do not damage the thread.

 

[tom1]

my only issue with crimps is i could not find a set that crimps from 1mm to 16mm

 

[green-hornet]

I have an hydrolic crimper for cables up to 400mm, used it on one job so far

For smaller cables I have two types of crimp tool both are ratchet and for different uses.

 

[SPECIAL LOCATION]

use a quality crimper

not^ :coat

Oh come on now you Bas***d!!!!! ]

Stop going though MY toolbox wont you!!!! ]

I shall tell ADMIN!!!!!

 

[Andy™]

my only issue with crimps is i could not find a set that crimps from 1mm to 16mm