Quite right, Chris, and (as far as UK supply is concerned) quite wrong
Daniel, in the sense that you would be ill-advised to mix them up! But I
will be happy for Tim Hughes to tell me otherwise (again!).
Thw neutral wire *is* neutral, with zero current flowing, when the entire
system is running properly - the entire system is a three-phase AC system,
able to provide 415V three-phase, and 24v from any one phase. For domestic
supply, single pahse is the norm, and assuming all three phases are
balanced, there will be no current flowing on the neutral (which is common
to all three pahses).
It was a question that bugged me at school too (thinking of James Royall's
original question) but I got the answer in Chemistry rather than Physics
class. Put that down to the approachability of the teacher.
Piers
-----Original Message-----
From: olympus-owner@xxxxxxxxxx [mailto:olympus-owner@xxxxxxxxxx] On Behalf
Of Chris Barker
Sent: 14 April 2004 06:11
To: olympus@xxxxxxxxxx
Subject: [OM] Re: OT Rant: No more $$ to Europe!
It's a bit strange then that only one wire shows a current when tested with
an 'electrical' screwdriver - and it's always the same wire.
Chris
On 14 Apr 2004, at 05:46, Daniel Tan wrote:
>
> There actually isn't any difference - it's labelled like that to
> conform to a convention or standard. The AC wave can start on either
> the negative side or the positive. Since the machine can deal with
> both (it's an AC machine), it won't be wrong at any time.
> For USA, SG plugs, the plug is reversible - you can plug it in anyway
> you want.
> For Malaysia, Australia/NZ, possibly Europe (I've never seen the power
> connector) there are live, neutral, ground configured in a specific
> manner.
>
> Daniel Tan
<|_:-)_|>
C M I Barker
Cambridgeshire, Great Britain.
+44 (0)7092 251126
ftog at threeshoes.co.uk
http://www.threeshoes.co.uk
http://homepage.mac.com/zuiko
... a nascent photo library.
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