Wall Mounting A TV

True, for domestic installations, but the scope of BS7671 extends to all electrical installations.
It does, but the discussion here, in this DIY forum, has been about domestic situations - and, in any event, as we know (e.g. "non-combustible" CUs!) BS7671 is not beyond having different requirements for domestic and non-domestic installations.

Kind Regards, John
 
I argued (unsuccessfully) in an IEC WG that each cable should have an insulation rating for the greatest voltage difference. Perhaps a greater problem with DC, but...
I suppose that would make sense if one wanted to cater for the eventuality that the voltage withstanding capability of some other cable might fall to zero.

It's not only with DC that 'the problem gets greater' - two cables carrying different (single) phases would also be an issue.

With same-phase AC or same-polarity DC one would have to be careful about the wording, else one might end up suggesting that if one cable carried 240V and another carried 120V, than neither had to be able to 'withstand' more than 120V !

Kind Regards, John
 
the discussion here, in this DIY forum, has been about domestic situations
If you say so.
rolleyes.gif
 

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