In article ,
Michael A. Terrell wrote:
I wouldn't have believed that sort of screw connection was still in
use. It's a dreadful way of making a connection. Unless you first
crimp on a suitable terminal.


Then it's a damn good thing you don't do electrical work in the US,
isn't it?

It is. I'd not be able to warrant my work with bodges like that.

What you can't see is that there are grooved slots in the
terminal that grip the wire, when the screw is tightened.

Makes little difference. The *only* reason to use that sort of connection
is cost - and that fitting certainly looks cheap.

'Crimps' are
illegal, without certified tools with current inspection tags & proper
training.

Goes without saying that any crimp must be made with the correct tool. But
of course an additional connection is a bad thing except where essential.
And I'd say it was essential with those fittings.

They are used in the few places with aluminum wire, to crip a
copper pigtail onto the aluminum wire, and every part of the process is
tightly controlled. Either hire the right work, or rewire the building
with copper.

Aluminium cable was tried here briefly many years ago - but I've never
come across it. Only used by those who put money before safety and
longevity.

--
*Procrastinate now

Dave Plowman London SW
To e-mail, change noise into sound.