"Pop" wrote in message
news:HrwFf.1418$r53.416@trndny03...
...
:
: Otherwise, you aren't any better than anyone else, and
particularly
: not any better than anyone you deride here.

Well, I dunno 'bout that: if you're included, then he's
certainly better than you, that's a given. Fuchsy is a
closed
mind with a large bowel, I'm afraid. Nuff said

well ...maybe Fuchsie is a closed mind etc... or maybe he
is a romex wiring house type electrician... there are about
200 of those for everyone doing industrial contols and
automation (where soldering stranded ends is pervasively
common).

So...we get on the ng, this 200 to 1 ratio of
insightability. Im sure Roy will respond appropriately to my
posts on the topic... gentleman that he is, and realizing that
the way to become an idiot is to defend ones current
position...

As a consulting engineer the first thing I tell my clients
is that they know more about their situation in many aspects
than I do, and that I will be learning from them and
formatting much or most of my recommendations based on what
they know and have learned about their systems.. that
works...and I am not then immune to learning myself.

..
In corrosive environments, stranded wire will corrode into the
crimmped terminal and around the wire, insulating the wire
from the terminal slightly causing it to burn, then fail..
thats common.

Accordingly battery cable manufacturers most often solder
their wire into the crimped terminal ends.

This practice is seen pervasively in marine environments on
both low amperage control circuits, and on power circuits.



Use of solder on power circuit terminals however has many
problems, namely the solder melting out of the joint if the
wire warms too much...and extrusion of the solder under
compressive stress if screw connectors are used.. the military
specs some are referring to cover that aspect... but not the
other aspects.


Use of solder in an already crimped terminal serves to
increase the electrical contact area, thats good, and to
preclude corrosive gases, vapors and oils from the joint (by
wicking up the bare wire).... that is seen commonly be the
cause of failure in those situations.


For the last 100 years... and currently.... most if not all
controls systems and component manufacturers dip wire ends in
solder that are to be fit under screw head connectors... the
practice is at least 90% common.... thats with *control
circuits.

The practice is not common with power circuits for the reasons
mentioned but is still seen in some situations (primarily
corrosive environments... anyone can purchase NEC approved
soldered connectors of course for those purposes... those are
also pervasively common, especially in the electronics
industry.)

..

220,000 hits... lots of good articles on the first page.
http://www.google.com/search?hl=en&q...=Google+Search

There is a time and a place to solder crimped or non crimped
terminals and bare wire ends to be fit under a screw head....
and a time when that is not a good idea (hot running
situations, although Ive seen pure silver or brassed
connections in those locations)



Phil Scott
Mechanical/ Electrical engineer and industrial controls
contractor since 1852 (I'm very old)