From: "Ed Price"
References: <3D84792C.15312F03@prontoREMOVETHISmail.com> <3D8D92CD.856FC4B7@prontoREMOVETHISmail.com> <1032703544.547222@savina>
Subject: Re: wire joining practice..
X-Newsreader: Microsoft Outlook Express 6.00.2800.1106
Date: Mon, 23 Sep 2002 10:07:54 GMT
NNTP-Posting-Date: Mon, 23 Sep 2002 06:07:54 EDT
Organization: Cox Communications
"Richard Kanarek" wrote in message
> Being highly impertinent, I must respectfully -- and cautiously --
> disagree with your recent post:
> On Sun, 22 Sep 2002 10:05:39 -0400, "Al Hephy"
> >The connection [wire nut] should first be made by twisting, such that it
> >electrically secure in its own right, then use the wire nut to clinch the
> >deal and provide insulation.
> >Regards, Al
> While my field servicing days are a decade behind me, and while I was
> an Electronics Technician, and not an Electrician, here's what I
> 1) The instructions on the wire nut box (at least the one I recall)
> say NOT to twist the wires before inserting them into the nut. (Please
> don't hesitate to correct me if I'm wrong!)
I think that the official reasoning for not twisting the wires is that, if
you pre-twist the wires, you may end up with a bundle in which one wire is
shrouded by the other wires, and thus is not deformed by the wirenut coil
spring.This condition is near impossible with just two or three wires in a
splice, but wirenuts can join multiple conductors. I don't know what the
limit is, but, if you need to join 20 conductors, maybe you should rethink
your wiring scheme.
Whatever the official CYA instructions are, I always insert the wires
parallel, in one group, into the wirenut. I then rotate the wirenut, being
sure that the wires are not backing out of the wirenut. I always use the
"winged" wirenuts (they have little plastic extensions that allow you to
apply more torque) and I always use wirenuts that have an internal metal
coil spring. I rotate until I can't turn any more, or at least up to the
point I feel the plastic body start to slip on the coil spring.
Is this practice correct? Are wirenuts "primitive" technology? Who cares?
Wirenuts are efficient for low-voltage and low-current splices. In 30 years
of amateur wirenut use, I have never had a bad splice (no hot connections,
no fall-offs, etc). And, the times I have taken my old joints apart, the
wirenuts have still been doing their job. OTOH, I have found many bad
wirenut splices, usually obviously attributable to improper sizing,
stripping or torque.
This implies that wirenuts are low-cost, simple, and very reliable, unless
installed by baboons.