From: Chuck Simmons
Organization: You jest.
X-Mailer: Mozilla 4.61 [en] (X11; U; Linux 2.0.33 i586)
Subject: Re: wire joining practice..
References: <3D84792C.15312F03@prontoREMOVETHISmail.com> <3D8D92CD.856FC4B7@prontoREMOVETHISmail.com>
Date: Mon, 23 Sep 2002 13:13:38 GMT
NNTP-Posting-Date: Mon, 23 Sep 2002 06:13:38 PDT
Andrew Gabriel wrote:
> In article <3D8D92CD.856FC4B7@prontoremovethismail.com>,
> AC/DCdude17 writes:
> > By the way, what methods are used to make splices outside North America?
> > Here wire-to-wire connections are made with wire nuts. You hold two wires
> > together, and you slip on a special lid thing and twist it on. That's it. I
> > doubt you'll see many crimp on terminals or crimp on splices here. What
> > happened to spade terminals and such here?
> In the UK:
> If the terminal will remain accessible without wrecking decorations
> or building fabric, screw terminals are used where you insert the
> wire into a hole and clamp a screw onto it. One variation on this is
> what I think you are calling split bolts, but I don't like them very
> much, and machined brass screw terminals are preferred. Wrap-around
> screw terminals are no longer used. Terminals must be within a fire-
> retardant enclosure, and are usually an integral part of that
> enclosure. You should be able to occasionally disassemble/reassemble
> such connections for testing, fault-finding and circuit expansion.
> As others have said, wirenuts/screwits have not been used for
> probably 50 or more years in UK, and I don't think they were ever
> particularly popular.
> If the terminal will not remain accessible without wrecking
> decorations or building fabric, crimp or soldered connections must
> be used, but generally the use of inaccessible connections is to
> be avoided whereever possible.
> I have just made a recommendation that the UK Wiring Regulations be
> changed to require inaccessible connections to be fully waterproofed
> against submersion in areas where they are located below the maximum
> flood level. Again, avoiding them altogether is better, but will not
> always be completely viable.
When I installed my lathe and mill at my brother's garage, I had to tap
into the drop from the house. My father had done this splice more than
forty years ago with solder. I used copper split bolts for this tap
since I did not wish to use a solder pot while standing on a ladder. I
had to use stranded drops to the machines because of vibration. It
happens that wire nuts work well for going from solid wire to stranded
wire so the machine drops have wire nuts on both ends. The machines are
quite old (the lathe is from the 1940s) and used wire nuts anyway so it
was easiest to follow the original.
Where my brother lives, I would ordinarilly consider his house flood
proof being easily 200 feet above the river which is more than 5 miles
away anyway. Unfortunately, his house has been flooded. I don't think
any of us reckoned on the dangers due to flood control. About thirty
years ago, the powers that be diverted a flood in a small section of a
neighboring town into the irrigation system which could not handle it.
The result was that they flooded a vast area of the city to save a
couple of square blocks of another town from a flood. As it happens, the
city has mainly houses without basements so all of the wiring is
overhead. The flood was electrically inconsequential and power did not
fail in the affected areas. In any case, when wiring the machines, I did
not have to take flooding as a serious threat. Without flood control,
the danger of flood would be zero.
... The times have been,
That, when the brains were out,
the man would die. ... Macbeth
Chuck Simmons email@example.com