2008/8/31 Ross Drummond wrote:
>> While pulling this cable alongside power cable, it is possible (and if
>> the holes are tight, likely) that some insulation will rub/scrape off
>> both the power and and the data cable, thus livening the foil screen
>> on the data cable to 230V.
>>
>> A person handling the data cable is then at risk of shock, possibly
>> leading to burns or ventricular fibrillation - an often fatal
>> condition.
>
> I am a big fan of earth continuity after my toaster threw me backwards into
> the refrigerator. The shielding will be earthed.

Even so, it is against regulations to run the data together with the power.
AS/NZS 3000:2000 "Wiring Rules" clause 3.9.9.3


[snip]
> A concrete pad floor unfortunately.

Crawl space in roof or monopitch?
If there's a roof space it can be done from there. Requires drill
extensions and some skill.

Yuri

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