Date   : Fri, 04 Sep 2009 16:53:56 +0100
From   : rs423@... (Mick Champion)
Subject: Leccy @ Acorn World '09

Jason Flynn G7OCD wrote:
> --- On Thu, 3/9/09, Mick Champion <rs423@...> wrote:
>   
>> However, what do you mean by "material it is enclosed in"?
>> Do you mean aperture the cable rests in, or the cable 
>> covering (ie PVC)? If you refer to the aperture, please
>> tell  more.
>>     
>
> Yes, the sustained current rating depends on factors such as
> whether it is in conduit surrounded by still air, attached to
> a wooden beam using cable holders, buried in plaster..etc..
> It's a thermal thing and it's important when fitting 11kW
> electric showers etc :-)
>
>
>  
Length is also deciding factor as to cable rating I know. As I said in a 
previous mail, I never thought of the aperture the cable rests in making 
a difference... until now.


Mick.