On 22/11/14 19:27, John Rumm wrote:

"Live wire, phase, earth bond, bulb, "

That should give a few people apoplexy ;-)

nope, not biting ;-)

:-

On a serious note -

I am very much against the continual changing of nomenclature for the
sake of it which we seem to get a lot of these days...

My water pipe has a main equipotential bond to the main earth terminal.
So we might as well say it's earth-bonded. 90% of regular people at
least know what that means. The other 10% would shove the wire into a
pot plant on the window cill.

Indeed they will. The only problem with the nomenclature is that is
actually makes understanding the reason for its existence a bit more
difficult.

If you can keep the concepts of earthing and EQ bonding separate in your
mind, the whole point that they do different things (limit the duration
of a shock, vs limit its magnitude), by different mechanisms (opening a
CPD with a fault current Vs limit potential difference) is much easier
to get a grip on I find.

I agree with that - it's just that folk who work with it will know that
anyway - but ordinary folk just get more confused.

"PIR" was easy to say. Does anyone ask for an "EICR"?

Yup agreed it does not add much. I suppose the fact that the P was not
necessarily actually true is what sank that one.

I was trying to find a numerous picture of the earth wire thing. But I
found this instead:

http://www.dailymail.co.uk/news/arti...-cannabis.html



WTF? I did not know weed could do that (even superstrenghth weed).

That last photo in particular looks fairly scary... still I suppose the
power was off by then!