I know all the theory (!) now about how to carry out the continuity
tests on rings circuits, connecting wires together, testing at each
On a practical note, how do people test at the socket? Unscrew it and
check at terminals with probes? Poke probes in front? Use a topless
plug? None of these?
When I do these tests, I use a special test lead - 13A plug with a few
inches of wire to SHROUDED 4mm plugs that I built (with a large "TEST ONLY"
label on it) - which then plugs into my continuity tester, and test into the
actual socket itself.
For those that have to do this on a regular basis I wonder whether there is
making a special test box which has a push-to-make switch to connect the
Neutral to the shrouded sockets and some sort of mains lamp or neon or mains
buzzer wired before it.
Therefore on the (rare) ocassions when you accidentally push the plug into a
you will get some warning about the consequences of pushing the button and
Further, how about a mains relay that disconnects the shrouded sockets when
mains potential between Live and Neutral.
Just an idea.
Sigh... you only think of the greater picture once you press "Send":
Any gadget across Live and Neutral may have a resistance which would bias
the resistance checks wot you are using the meter for.
Something to take account of.
But maybe a neon and a 470k resistor wouldn't hurt...
Ah, now, that sounds like a good idea! I was toying with the idea of a
13A plug and trailing leads, but hadn't thought of using 4mm leads
directly. That would be a good deal safer than bare wires and croc
I just KNEW there had to be a simple, reasonably safe way...
I was in the process of designing a small box with 4mm *sockets* and a
13A plug so that I could plug the probe leads from whatever I happen to
be using (insulation/continuity tester, multimeter "A", multimeter "B"),
all of which have different socket spacings but similar probes which
will fit 4mm sockets.
Martin Angove: http://www.tridwr.demon.co.uk /
Don't fight technology, live with it: http://www.livtech.co.uk /
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