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<pre>Folks</pre>
<pre>It seems there are many commentors whom may not have read the NZ Wiring regulations ie AS/NZ3000:2007 plus amendments.</pre>
<pre>Some have no idea on the subject they are commenting on.....</pre>
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<pre>There is a very good reason why certain devices are not connected to RCD's, and its explained.</pre>
<pre><a href="http://www.electricalforum.co.nz/index.php?action=more_details&id=1336126580&PHPSESSID=cabbf0743c5cf0b7cf75aaca05b4ec2d">http://www.electricalforum.co.nz/index.php?action=more_details&id=1336126580&PHPSESSID=cabbf0743c5cf0b7cf75aaca05b4ec2d</a></pre>
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<pre>The original designer (ie your electrician) has not completely thought of the consequences of a single event removing all 3 phases.</pre>
<pre>He could have used 3 separate RCD devices as I did in my house.</pre>
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<pre>In the meantime, might I suggest those that aren't familiar look at the document, (which I posted the link to previously).</pre>
<pre><a href="http://www.med.govt.nz/energysafety/documents/legislation-policy/electricity-act-regulations-codes/standards-and-codes-of-practice/NZECP%2051%202004%20New%20Zealand%20Electrical%20Code%20of%20Practice%20for%20Homeowner%20Occupiers%20Electrical%20Wiring%20Work%20in%20Domestic%20Installations%20%20-%20Published%2027%20July%202004%20.pdf">http://www.med.govt.nz/energysafety/documents/legislation-policy/electricity-act-regulations-codes/standards-and-codes-of-practice/NZECP%2051%202004%20New%20Zealand%20Electrical%20Code%20of%20Practice%20for%20Homeowner%20Occupiers%20Electrical%20Wiring%20Work%20in%20Domestic%20Installations%20%20-%20Published%2027%20July%202004%20.pdf</a></pre>
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<pre>Mark</pre>
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On Tue, 15 Jul 2014 10:03:30 +1200, Volker Kuhlmann wrote:
> On Tue 15 Jul 2014 08:54:24 NZST +1200, Marshland Engineering wrote:
>
>> 30 ma is 30 ma regardless of how many breakers you have. We have one 3 phase RCD of 30 ma one feeding about 40 CB. We have a 'big' house many flouresecnt tubes, 1 fridge, 3 freezers, 1 large mill, 2 large lathes, 3 hot water cylinders, 2 heat pumps, dozens of computers, one 4 kw oil heater, washing machine, tumble drier, and still, I've
>> never had to find and reset the RCD in the dark (or even the light for that
>> matter).
>
> And all those loads were connected downstream of theRCD? Are you sure?
>
>> >Seems to work in South Africa when I lived there, but maybe the laws
>> >of physics were different under apartheid.
>>
>> Oh yes. Made me laugh.
>
> Keep laughing, I don't care. You two smartalecs are welcome to come over
> and do your own measurements on the 6kW heater I have here. Your
> suggestion of replacing a brand-new heater here in New Zealand just
> because it doesn't fit your South African wiring made *me* laugh...
>
> Volker
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