In article ,
(Jack Erbes) wrote:

tinning stranded bare
copper wires before crimping a terminal on is a bad thing to do

I have been told that it acts as a stress raiser at the point where the
tinning ends, and with vibration this can cause a fatigue fracture of the
wire at that point.

I think best practice is to use tinned copper wire (all the strands
individually tinned during manufacture), with a mechanical only crimp
covered by a short length of adhesive-lined heatshrink tubing.

In the UK, these people: http://www.power-store.com/products/mcw/index.htm
have an interesting range. The stuff they sell is the US-made Ancor range.

It's an expensive way of doing things but should last very well and be
reliable.

Regards,

Jerry Jones

Remove the obvious from my address to reply

"The Floating Bear" wrote in message
. uk...
In article ,
(Jack Erbes) wrote:

tinning stranded bare
copper wires before crimping a terminal on is a bad thing to do

I have been told that it acts as a stress raiser at the point where the
tinning ends, and with vibration this can cause a fatigue fracture of the
wire at that point.

Correct. That is also a reason why regulations prohibit this.

Meindert