How to use a crimp tool - uninsulated crimps

[crystal ball]

Was that in Barrow. On the subs or gun squad? They used to give us ratchet crimpers on the gun squad when doing panel wiring but can't remember anything being calibrated or labelled

Yes, on the subs mainly, O Boats & nuclear

 

[flameport]

Or maybe I just connect them up like others do with just the cable strands either side of the screw? #Rough!

The better option with no crimp is to put the whole wire around the screw, and leave a short stub of wire on the other side.

Similar to this one, although the cable tie to the gas pipe is not desirable, and the label has been located incorrectly at the back where no one can see it.

 

[CountryFan]

The better option with no crimp is to put the whole wire around the screw, and leave a short stub of wire on the other side.

Similar to this one, although the cable tie to the gas pipe is not desirable, and the label has been located incorrectly at the back where no one can see it.

View attachment 416401

Yep, remember that from the video too . I find that more of a faff though. I’ve sent those crimpers back today. May get the toolstation ones, may not. I don’t do all that many tbh and none of our sparks seem to crimp, but I do find the odd one that’s been done.

 

[pete01]

 

[mikehammer69]

4 holes, the markings are not all in the same location relative to the holes.

View attachment 416344



It's a rather nasty piece anyway, and good luck crimping 10mm² with that and not incurring some kind of hand injury.

This: https://www.amazon.co.uk/Solsop-Hydraulic-Crimping-Pliers-Aluminium/dp/B0BMF6YYHT?th=1 and it's many similar variations
is a far better option, used with lugs like these: https://www.screwfix.com/p/essentials-non-insulated-metallic-6mm-ring-copper-tube-lugs-10-pack/33041

how do you find stuff like that , it never ceases to amaze me

 

[mattylad]

Talking of cord end crimps (or bootlace or whatever you call them).
Do you have the wire poking out the end or not?
I have seen the above electrical distributers video on YT saying you need to have the wire sticking about 1mm past the end of the front of the crimp.
WTF for I'm not sure, IMO it does nothing except for prevent the crimp going into a small terminal fully.

Do you twist before fitting the crimp or not?
I find that yes not twisting is quicker but it makes it more likely that a stray bit of wire will fold back and stick out the rear, I find a gentle twist prevents this (more than not twisting).

Are there any documented standards or how to's for using these? Would be interesting to give to the apprentices at work for a laugh.

 

[pete01]

Do you have the wire poking out the end or not?

No, if a bit sticks out I cut it off.

Do you twist before fitting the crimp or not?

No I dont twist.

 

[SUNRAY]

Talking of cord end crimps (or bootlace or whatever you call them).
Do you have the wire poking out the end or not?
I have seen the above electrical distributers video on YT saying you need to have the wire sticking about 1mm past the end of the front of the crimp.
WTF for I'm not sure, IMO it does nothing except for prevent the crimp going into a small terminal fully.

Do you twist before fitting the crimp or not?
I find that yes not twisting is quicker but it makes it more likely that a stray bit of wire will fold back and stick out the rear, I find a gentle twist prevents this (more than not twisting).

Are there any documented standards or how to's for using these? Would be interesting to give to the apprentices at work for a laugh.

No don't twist, I find there is more of a chance for a strand to catch if twisted round