Short answer, no.
This really comes down to workmanship. A properly made up wire nut
splice will last forever but if you get one of the wires a bit short
and it does not engage the spring, you will have a bad connection.
For your average homeowner, I suggest stripping about an inch of wire,
twisting them up tightly (clockwise), cutting off all but the last
5/8" or so, looking it over carefully to be sure it is uniform, then
screwing on the wire nut.
The listing does allow the wires to be put in the nut without twisting
but it is way too easy to have one not being seated right for someone
who doesn't do it all day.
On Saturday, October 31, 2015 at 12:26:04 PM UTC-4, firstname.lastname@example.org wrote:
That's for stranded wire, right?
The one failure I saw was on my hot water heater replacement. Since it was a rental I didn't do it myself. But I came back to a house with cold water and a burnt smell in the utility room. The wires had burned off at the wire nut.
The connection was on #12 solid, and the mechanic had twisted the wires before putting on the wire nut, but they didn't make good enough contact, it's very hard to twist solid wire tightly enough.
I put them back together, exactly straight and exactly the same length, not twisted, before I put the wire nut back on, and it was still doing fine when I moved out several years later.
I concluded stranded wire should always be twisted and solid never, but that's just my personal opinion.
Working at a large company and installing lots of wire nuts of all sizes, I
never twisted any wires. The instructions for some say they can be
twisted, but not needed. If correctly installed, the wires will twist when
the nut goes on. I never reuse a wire nut. I never taped any except when
installed on motors or something that viberates. Probably not needed, but
just did it sometimes.
Can anyone show where the companies recommend or require the wires to be
twisted ? I bet not. All that I have seen say not required and the videos
that show them being instlled do not show anyone twisting the wires together
before putting onthe wire nuts.
If done correctly the nuts twist the wires together and will not be easy to
just pull off.
On Sat, 31 Oct 2015 21:58:35 -0400, "Ralph Mowery"
It is not required nor is it prohibited. Bear in mind these
instructions are made to professionals. I see them made up both ways.
As for twisting the wires, it depends on the nut. The hard "Ideals"
will tend to twist the wires but the soft, live spring models don't. I
have taken them apart and found the wires straight and neatly bundled
in the spring, that will come out of the cup as often as not.
They also show using tape which should not be needed. Not sure who made
the video, but go here to the company that makes the connectors for the way
they recommend doing it.
It is going to be interisting in the next few yers to see how well those
connectors and another type called Wall Nuts hold up. It seems they just
rely on the friction on the connectors, just as the recepticls that have
the back stab type connections do.
The sockets seem to have gotten a bad reputation over the years. Maybe by
some inexpensive knock offs of the origional.
One thing I have mixed feelings about is the WAGOconnectors have a slot in
them. Good for checking voltage, but bad as something could get in that
slot and cause problems with a short.
I did see a vidio on using a lot of them in wire racks. With the type of
mounting, I did not see how the wires could be removed if needed without
lots of problems. Working at a company that used lots of instalations like
that makes me want a connector the wires can be removed and reconnected
without any problems.
Part of the problem with the back stabbers was the lateral stresses
put on the connection when you were pushing the device back in the
box. That is one reason why they lifted the listing on 12 ga wire,
There is less stress (bending force) with 14 ga.,
With the splices, it is less actual stress on the connection because
you can guide the wire itself while stuffing the box.
email@example.com posted for all of us...
approvals I may have to contact Wago but I have yet to find an Email address
for them. I'm curious now and would like to know. Interesting thing about
the new and improved 221 series is that they're rated at 32 amps in Europe
but in The U.S. it will only be rated for 20 amps. ^_^
Call them and ask and get more samples than you will ever use. You could
always use them for traction aids in the snow...
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Also good for arthritic thumbs... I have found they clamp the wire very
well that pulling it out is not possible.
Does anyone in the business have any more insight into these?
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