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ZL1AJG > TECHNI 11.01.05 22:07l 81 Lines 3205 Bytes #999 (0) @ WW
BID : EB1007ZL1AJG
Read: GUEST OE7FMI
Subj: Re: Re^2: AC 3 Phase Power
Path: DB0FHN<DB0THA<DB0HDF<DB0ERF<DB0HGW<ON0DXC<ON0RET<SR1BSZ<SR7BBS<SP7MGD<
7M3TJZ<ZL1UX
Sent: 050111/1943Z @:ZL1UX.#20.NZL.OC #:28913 [Hamilton] FBB7.00i $:EB1007ZL1AJ
From: ZL1AJG@ZL1UX.#20.NZL.OC
To : TECHNI@WW
From: DF3VI (Patrick)
> Hi Allen.
>
> Being used the german color code, I was quite surprised about the "strange"
> color codes used in the USA (and some other countries).
> You fall to a common trap considering to be general what you are used to
> locally!
I guess around the other side of the globe, a lot of the things are not
normally seen or understood. Generally, from very early on (my first
memory of colour codes is the mid fifties) was Activew = red, Neutral =
black, and Earth = green (is this how the "green parties" got the idea?)
All equipment in NZ was this code as was all equipment from Australia, US
of A, and Merry Olde England. We were unaware of other colour codes in
Europe/Scandinavia, most likely the cable being changed by the importer,
or specified for our local codebefore it was exported.
Therefore the colour that was common to your part of the world was
totally foreign to many, and therefore the coding seemed to have no
relevance. Red was "hot", black was "cold and green was "earth/ground",
like ground/grass.
> Here the standard for AC was brown for phase, blue for neutral, yellow/green
> for PE for ever I can remember. In three phase installations, the second and
> third phase were black. So the new definition just slightly changed the
> standard, giving the two additional phases a distinction.
> I see no problems for electricians to cope with that...
>
> 73, Patrick
Three phase was generally red/yellow/blue, with black being the ground (I
think I'm right, although there may have been variations)
So, you see it is much like having to change from right hsnd drive to
left hand drive; there is a whole lot of learning to do, from the old way
of doing things.
My point, although I don't think I made it clear, was not so much the (to
us ) "oddball" colour relationship - which is confusing, athough I look at
it it as Brown=hot/burned - (active), Blue=cold (neutral) and green earth
much as it was. I don't personally deal with 3-phase, although I have been
operatinf a lot of such equipment.
The other point was: Who were the ones responsible for making the colour
standard as the NEW International standard? And where were they based? I
feel it was European-based, and that the standards used elsewhere were not
made aware of (or didn't care about) other codes that were used, even if
they were more prevalent than they thought, possibly. It is much like all
the other metric things that have bee "forced" on us in the name of
"globalisation, (a term I despise), like currency, (not a bad thing) and
the conversion to metric distance/volumes and other terms (kHz from k/c's
etc).
It was the vast difference in the colour relationship that caused me to
sound off previously. It was not intended to cause grief; I just waold
like to know who were responsible for forcing the issue.
73 de Allen, Cambridge, N.Z. RF72RC
ZL1AJG @ ZL1UX
allengilbert@clear.net.nz
X: "You can be an individual, as long as you do as you are told!"
Message timed: 08:37 on 12 Jan 05, using WinPack-AGW V6.80,
AMD K6-2/350, W98se, AGW-PE, Baycom modem, IC-2A, Digitor 30w amp.
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