Extending 2.5mm in a backbox

[Lucien Nunes]

A soldered joint, if it is skilfully soldered and not just plastered with solder, is an excellent connection that will have better conductivity and durability than any of the others. Poor workmanship can let it down, however, and there is more to insulating a joint that sliding any old bit of heatshrink over it. Site-applied insulation should be as good as the original cable insulation and often one finds heatshrink of the wrong wall thickness, or rough surfaces on the joint that nearly puncture it, etc. Saying that solder joints are suspect due to the melting point of solder, is like advising not to use rubber tyres on your car because rubber is combustible!

Inline crimps used on solid conductors must be suitable for the purpose and made with the correct die set and tool. Many are not, and I would rank a generic red or blue crimp made with a.n. other tool as the least satisfactory choice.

Terminal block is OK again if of good quality and properly installed, but Wagos / equivalent would always be my first choice for general all-round suitability.

 

[l4urence]

I’ll consider myself corrected regarding melting point of solder and will never mention it again without throwing myself naked into the nettle patch. I would still not advise someone to solder connections - Luciens remarks about skilled soldering stand but not everyone can solder and I would be nervous if someone unskilled read this forum thread and went away considering that soldering a good idea over a connector. I think that was the point I was trying to get across.

 

[telectrix]

soldered joints were 100% using decent 7 strand cable, twisted neatly before soldering. now we're lumbered with this solid strand crap, makes it harder to get a sound connection.

 

[Lucien Nunes]

Fair point l4urence, there are lots of people who can stick two wires together with a bit of solder, but fewer who can make a joint worthy of the name. Certainly for the jobbing spark a Wago is likely to do a better job than a so-so soldered effort.

 

[Pete999]

Fair point l4urence, there are lots of people who can stick two wires together with a bit of solder, but fewer who can make a joint worthy of the name. Certainly for the jobbing spark a Wago is likely to do a better job than a so-so soldered effort.

You could always try this method.

 

[telectrix]

You could always try this method.

if he'd soldered that, it would have been a good job.as it is, i suppose it's good enough for 12V on a land rover. the loom will have fallen out before his joint failed.

 

[benji]

Anyone remember the married joint for stranded cable

 

[telectrix]

 

[ipf]

I wonder what he'd be like with 25mm 4 core.....