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M1BYT > INFO 26.07.02 11:56l 58 Lines 2563 Bytes #999 (0) @ WW
BID : 290580M1BYT
Read: DB0FHN GUEST
Subj: Re: Switches. UP for ON and vice versa.
Path: DB0FHN<DB0ZWI<DB0HOT<DB0MRW<OK0PKL<OK0PPL<RZ6HXA<SP7MGD<7M3TJZ<N0WJP<
VK3AVE<GB7FCR
Sent: 020726/0946Z @:GB7FCR.#16.GBR.EU #:4873 [Blackpool] FBB-7.03a $:290580M1B
From: M1BYT@GB7FCR.#16.GBR.EU
To : INFO@WW
G0TEZ Opined with considerable skill:-
> As Harry, M1BYT says. The standard in the UK is to switch down for ON and
> up for OFF.
> Foreign devices, including US, are the opposite. Only on our fuse boxes is
> it UP for ON and Down for OFF, in cact you can't even open them if the
> switch is UP=ON.
Hi Ian,
Inter-locking the front cover when the switch was on used to be normal
in the UK, but I notice that many more modern ones are not inter-locked.
This may be due to many of the Consumer Unit equipments being imported
and there being no specific construction regulation demanding the
inter-locking.
Light switches and socket outlets are generally all produced in the UK,
so can therefore be made to suit the local market (down for on). As
someone else commented, I also can think of no good reason for switches
to be mounted down for on and the good point was made that it is easier
to swipe them off in a downward direction in an emergency.
A further note on the two way switch.....
As everyone knows these can 'settle' in either direction for on or off,
leaving the 'lamp-changer' with no clues if the lamp blows which way is
off. On those odd occaisions when I have wired these circuits, I set
them up so that if both switches are up, the supply to the lamp(s) is
off. This is simply a matter of swapping over one end of the (what used
to be called) the 'strappers' or the pair of wires which join the two
two-way switches.
My own preferrence is to generally work with equipment turned on (live)
and to obviously treat it as such. This comes from lifetime working on
control equipment where the only way it can be tested and adjusted is
with the equipment in operation.
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º 73 from Harry, M1BYT @ GB7FCR.#16.GBR.EU.GBR º
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º International Museums Weekend 15+16th June 2002 º
º www.ukradioamateur.org/imw/index.html º
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º RAE CD ROM course Project and the Newcomers Intro º
º to amateur radio:- http://www.ukradioamateur.org/ º
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º QTH: Garforth, W. Yorks.. º Timed 09:45 º
º harry_m1byt@ntlworld.com º 26 Jul 2002 º
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