10-25mm crimper

[davesparks]

Not if its subject to movement or vibration - solder tends to crack (seen plenty of MIs that state crimp or screw terminations - DO NOT solder)

Movement doesn't bother soldered terminations.
In stage lighting we use multicores with soldered terminations and they get constantly moved around from show to show yet never had failures.

 

[davesparks]

i should add that im only going to be using it for bonding anyway. if i need to crimp any terminals ill get a proper big set

A bonding connection still needs to be made to the same standard as any other connection

 

[shanky887614]

Movement doesn't bother soldered terminations.
In stage lighting we use multicores with soldered terminations and they get constantly moved around from show to show yet never had failures.

the only reason a lot of MI will say do no solder is people tend to either do a bad job soldering or damage the insulation/equipment.

a properly done soldered termination is very strong, i would rather solder than use red,blue or yellow crimps. you know the copper will break before the joint

 

[shanky887614]

A bonding connection still needs to be made to the same standard as any other connection

thats why i said im trying them, there the same as the ones which are a lot more expensive in my wholesalers.

ck are £60 each and £21 at tlc so im not suprised a firm has managed to get them this cheap when you see the quantity they have.

to be honest the company is probably trying to clear stock

 

[overskilled]

Movement doesn't bother soldered terminations.
In stage lighting we use multicores with soldered terminations and they get constantly moved around from show to show yet never had failures.

526.9.3

think BS7671 disagrees with you

 

[davesparks]

526.9.3

think BS7671 disagrees with you

That regulation has got nothing to do with this, it is saying that you can't use solder as an alternative to ferrules for the termination of flex.
526.2 is where you need to look, which merely stipulates that the joint be designed taking in to account creep, mechanical stress and temperature rise

 

[shanky887614]

526.9.3

think BS7671 disagrees with you

read it again

That regulation has got nothing to do with this, it is saying that you can't use solder as an alternative to ferrules for the termination of flex.
526.2 is where you need to look, which merely stipulates that the joint be designed taking in to account creep, mechanical stress and temperature rise

in other words dont put soldered ends in an mcb or similar but to join a cable is fine

 

[overskilled]

joy of regs...I'd interpret that as saying if the cable is likely to move on either side of the joint don't solder it...

 

[davesparks]

joy of regs...I'd interpret that as saying if the cable is likely to move on either side of the joint don't solder it...

It is clearly in the section dealing specifically with fine stranded and very fine stranded conductors. And even then specifies relative movement of the conductor, not movement of the cable

 

[overskilled]

I'll walk away before I get a ban. Will say you ALWAYS think you know best....

 

[shanky887614]

I'll walk away before I get a ban. Will say you ALWAYS think you know best....

sorry but it says tinned.

now tinning is just covering the ends not a soldered connection. in other words a blob of solder on the end of a cable before putting it in a screwed connection.

http://www.youtube.com/watch?v=8jUaf394WIk


this is what the regs mean when they saying tinned cable

 

[davesparks]

sorry but it says tinned.

now tinning is just covering the ends not a soldered connection. in other words a blob of solder on the end of a cable before putting it in a screwed connection.

It says 'soldered (tinned)'

If there is a blob of solder on the end of the conductor it hasn't been tinned properly.
The problem, and the reason behind that regulation, is that a properly tinned connection will wick the solder up the cable by capillary action. This creates a point away from the actual connection where the strands cease to be bound together and so movement at that pint causes the strands to fracture through work hardening if movement occurs

 

[Darkwood]

The way I read this regulation 526.9.3 means is if the cable isn't clamped, gripped fixed in some form of fashion or in a housing that prevent movement and movement during service could be likely then a solder joint is not permitted, where you buy a plug and socket for say control cables etc the actual plug or socket house retain the cable joint so no movement to likely except to the actual cable as expected outside of the plug/socket.

This is why you can solder the pins in data, control, power cables etc in a plug or socket because the design ensures that there is no movement between the where the solder finishes and the flexable cable starts regardless how you bend and twist the cable external to the plug or socket.

Edit - I think the way it is put Soldered (tinned) is a reminder that tinned cable is inclusive to the regulation not that its refering to tinned exclusively.... again down to interpretation.

 

[shanky887614]

It says 'soldered (tinned)'

If there is a blob of solder on the end of the conductor it hasn't been tinned properly.
The problem, and the reason behind that regulation, is that a properly tinned connection will wick the solder up the cable by capillary action. This creates a point away from the actual connection where the strands cease to be bound together and so movement at that pint causes the strands to fracture through work hardening if movement occurs

yes i understand that but it makes it easier to understand than putting a light coat on it. how does it get drawn up the cable? solder cools really quickly unless your iron is too hot (i use a variable temp one)

 

[davesparks]

yes i understand that but it makes it easier to understand than putting a light coat on it. how does it get drawn up the cable? solder cools really quickly unless your iron is too hot (i use a variable temp one)

It gets drawn up by capillary action,