8 Jun
2010
8 Jun
'10
10:44 a.m.
----- Original Message -----
From: "Philip Pemberton" <classiccmp at philpem.me.uk>
To: "General Discussion: On-Topic and Off-Topic Posts"
<cctalk at classiccmp.org>
Sent: Monday, June 07, 2010 10:58 PM
Subject: Re: Fuses ans stuff was : Lightbulb police?
No meerkats on here please!
Regards,
Andrew B
aliensrcooluk at yahoo.co.uk
On 07/06/10 21:07, Tony Duell wrote:
urgh, "science" was the same few things every year for five years for me
(autumn 1990-summer 1996) - human reproductive organs, plants reproduction,
basic physics and thats it. We did do a little electrical work (series vs.
parallel), but I guess H&S put an end to the practical side.
You were actually taught something useful at
school? I am amazed...
Me too. We never got taught anything like that in science or physics (or
any class for that matter). Though a few of the PTA members and a
certain headteacher were very vocal about their dislike of "dangerous"
subjects...
Hmm.. Actualyl
stripping the cable tends to be the hardest part ot do
right. It's very easy to 'nick' the insulation on the inner wires when
cutting off the outer sheath.
It's a bitch doing it with co-ax too. I usually end up using a
retractable-blade Stanley knife to cut about half-way through the
insulation, then bend/twist it around the cut mark and it breaks apart
fairly easily. Then bend 180 degrees all four ways to make sure you
haven't nicked any of the internal wires.
The next trick you'd miss if you have
pre-stripped cable is the correct
length of the wires. The earth wire shold hace the most slack, so if the
cable clamp fials and the cable is pulled out of the plug, the earth
breaks last.
Easiest way to deal with that is to take off about 2.5" to 3" of outer
insulation, put the wire on top of the cable clamp, then cut the wires
back appropriately.
To check if the lengths are correct -- put the wires into the
screwpoints but don't tighten the screws. Pull on the wire and see what
the "order of detachment" is.
"Simples!"