Date   : Fri, 04 Sep 2009 17:03:29 +0100
From   : rs423@... (Mick Champion)
Subject: Leccy @ Acorn World '09

Jonathan Graham Harston wrote:
>> Message-ID: <4A9E8BB2.6010903@...>
>>     
>  
> Andrew Hancock wrote:
>   
>>> and I have to go round the house turning stuff off, to get it back on
>>>       
> again,
>   
>>> I suspect it's inrush current exceeding 32A!
>>>       
>  
> If it's 32A, it's probably a MCB or RCD. If it's a RCD, then that
> operates by monitoring the current on the phase, neutral and earth
> conductors. If phase<>neutral or earth>0, then it trips. You can
> get erroneous trips because of the power-on or power-off
> characteristics or certain appliances. The earth/neutral monitoring
> can be a right bugger if you're working on a final circuit with the
> circuit break switched off, if you happen to touch the earth to the
> neutral, an RCD earlier on in the circuit will trip - even though
> the final circuit is isolated.
>  
>   
>> If I remember correctly (for I can't find a definitive answer on t'web),
>>     
>  
> http://mdfs.net/Docs/Electrical
>   
Thanks. I will have a look around.


Cheers,

Mick