Don.

You wrote:

> Does anyone know if there are any formal restrictions to using  red
> colored lights for front panel displays and indicators?
> 
> Is there a harmonized European standard or regulation or a specific
> national regulation that requires the restriction of the color red for
> warning, danger, etc.
> 
> It seems it may have been a German ergonomic requirement before various
> standards were harmonized.  Can anyone shed some light on this issue?

IEC204, EN 60204, BSEN 60204 (all essentially the same) reserves red 
as the colour for Fault or Abnormal conditions on Electrical 
Equipment of machines.  i.e. should not be used to indicate the ON 
condition only etc.

On a related subject, anyone in the PSTC got an opinion on what 
colour an illuminated mains rocker switch (those with an illuminated 
rocker) should be on non-machinery equipment.  e.g. my washing 
machine is red, my computer is green, my fan heater is red, my kettle 
is red, my central heating controller is green, a bench power supply 
is red, a soldering iron green, an oscilloscope green ....  Is there a 
'standard' or reccomendation somewhere?

Chris Dupres
EMC Specialist. VG Microtech.
[email protected]
tel +44 (0) 1825 761077
fax +44 (0) 1825 768343
'Opinions expressed are personal, not necessarily Corporate'

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