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Help need some upto date info regarding leakage current of a double
insulated appliance and what do you use to measure it, like a Fluke etc.


From memory I was told it was a TV product that the person is getting
shocks from it..

On 9/06/2011 12:45 p.m., Frank Williams wrote:
>
>
>
> Help need some upto date info regarding leakage current of a double
> insulated appliance and what do you use to measure it, like a Fluke etc.
>
>
> From memory I was told it was a TV product that the person is getting
> shocks from it..
>


From what I can remember the act and regulations usually point to a
'Standard'

Electrical "Standards" are available from here:
http://www.standards.co.nz/touchston...al/default.htm
AS/NZS 3760:2010 in particular looks like it might be applicable.
http://www.standards.co.nz/web-shop/...%28AS%7CNZS%29

Of course you are going to have to 'pay' for a copy, hardly worth it if
it's for Family!

(Why one has to 'pay' to find out what the law of the land is, is beyond
me, but then so is most Politicians thinking)

Paul.

On 9/06/2011 6:48 p.m., PeeCee wrote:
> On 9/06/2011 12:45 p.m., Frank Williams wrote:
>>
>>
>>
>> Help need some upto date info regarding leakage current of a double
>> insulated appliance and what do you use to measure it, like a Fluke etc.
>>
>>
>> From memory I was told it was a TV product that the person is getting
>> shocks from it..
>>
>
>
> From what I can remember the act and regulations usually point to a
> 'Standard'
>
> Electrical "Standards" are available from here:
> http://www.standards.co.nz/touchston...al/default.htm
> AS/NZS 3760:2010 in particular looks like it might be applicable.
> http://www.standards.co.nz/web-shop/...%28AS%7CNZS%29
>
>
> Of course you are going to have to 'pay' for a copy, hardly worth it if
> it's for Family!
>
> (Why one has to 'pay' to find out what the law of the land is, is beyond
> me, but then so is most Politicians thinking)
>
> Paul.

Agreed that it sucks that you are supposed to adhiere to something you
cant own a copy of.

But, librarys often have electronic copies available that you can check
out or else browse online. I used the ones at unitec heaps when I had
access to them.

IMO, if you can feel it, its far too much. There were some old sat boxed
from a "former employer" that were terrible for leakage. Legal, but get
3-4 of them looped together and you would get a massive whack off the
shield of it. 9 would trip a whole house RCD.

On Thu, 09 Jun 2011 23:01:12 +1200, Richard wrote:

> Agreed that it sucks that you are supposed to adhiere to something you
> cant own a copy of.

You can own a copy of the standard - just purchase it from the Standards
Association.

It's called "user pays". You know - something that National Party
Supporters strongly advocate.


--
"Filtering the Internet is like trying to boil the ocean"

On 09/06/11 12:45, Frank Williams wrote:
>
> Help need some upto date info regarding leakage current of a double
> insulated appliance and what do you use to measure it, like a Fluke etc.
>
> From memory I was told it was a TV product that the person is getting
> shocks from it..
>
If you have a double insulated appliance that is giving shocks there is
something seriously wrong with it. Ditch it. Double insulated devices
are intended to be used without a safety connection. Double insulated
devices have only two core connections.

Cheers,

Cliff

--

The ends justifies the means - Niccolò di Bernardo dei Machiavelli.

The end excuses any evil - Sophocles

On Fri, 10 Jun 2011 08:58:05 +1200, Enkidu <>
wrote:

>On 09/06/11 12:45, Frank Williams wrote:
>>
>> Help need some upto date info regarding leakage current of a double
>> insulated appliance and what do you use to measure it, like a Fluke etc.
>>
>> From memory I was told it was a TV product that the person is getting
>> shocks from it..
>>
>If you have a double insulated appliance that is giving shocks there is
>something seriously wrong with it. Ditch it. Double insulated devices
>are intended to be used without a safety connection. Double insulated
>devices have only two core connections.
>
>Cheers,
>
>Cliff



All devices have leakage current its not possible to stop it, its get
coupled thought the capacitance of the Transformer, but what is the
maximum limit.?



This is a Freeview DVB-T box, but as usual 100% of the stuff sold
here has no reference to any electrical approval.

On 10/06/2011 1:56 p.m., Frank Williams wrote:
> On Fri, 10 Jun 2011 08:58:05 +1200, Enkidu<>
> wrote:
>
>> On 09/06/11 12:45, Frank Williams wrote:
>>>
>>> Help need some upto date info regarding leakage current of a double
>>> insulated appliance and what do you use to measure it, like a Fluke etc.
>>>
>>> From memory I was told it was a TV product that the person is getting
>>> shocks from it..
>>>
>> If you have a double insulated appliance that is giving shocks there is
>> something seriously wrong with it. Ditch it. Double insulated devices
>> are intended to be used without a safety connection. Double insulated
>> devices have only two core connections.
>>
>> Cheers,
>>
>> Cliff
>
>
>
> All devices have leakage current its not possible to stop it, its get
> coupled thought the capacitance of the Transformer, but what is the
> maximum limit.?
>
>
>
> This is a Freeview DVB-T box, but as usual 100% of the stuff sold
> here has no reference to any electrical approval.
>

<=1mA
If you can feel it its over 50mA

On 10/06/2011 1:56 p.m., Frank Williams wrote:
> On Fri, 10 Jun 2011 08:58:05 +1200, Enkidu<>
> wrote:
>
>> On 09/06/11 12:45, Frank Williams wrote:
>>>
>>> Help need some upto date info regarding leakage current of a double
>>> insulated appliance and what do you use to measure it, like a Fluke etc.
>>>
>>> From memory I was told it was a TV product that the person is getting
>>> shocks from it..
>>>
>> If you have a double insulated appliance that is giving shocks there is
>> something seriously wrong with it. Ditch it. Double insulated devices
>> are intended to be used without a safety connection. Double insulated
>> devices have only two core connections.
>>
>> Cheers,
>>
>> Cliff
>
>
>
> All devices have leakage current its not possible to stop it, its get
> coupled thought the capacitance of the Transformer, but what is the
> maximum limit.?
>
>
>
> This is a Freeview DVB-T box, but as usual 100% of the stuff sold
> here has no reference to any electrical approval.
>


FWIW

I have been told.

NZS 3760:2003

class I (protective earth) leakage current not to exceed 5ma.

Class II (double insulated) leakage current not to exceed 1ma.

Earth continuity 1 ohm or less.

Insulation resistance Class I & II : 1Mohm or greater.

RCD's can have insulation resistance down to 0.1Mohm under certain
circumstances.

Caveat's
Testing conditions, voltages, equipment and methods not mentioned.
Standard may not be current.

Entirely at your risk.

Emphasis: figures from someone's memory.
Use entirely your risk/responsibility.

P.

On 10/06/2011 8:05 a.m., EMB wrote:
> On 10/06/2011 1:11 a.m., Boots wrote:
>> On Thu, 09 Jun 2011 23:01:12 +1200, Richard wrote:
>>
>>> Agreed that it sucks that you are supposed to adhiere to something you
>>> cant own a copy of.
>>
>> You can own a copy of the standard - just purchase it from the Standards
>> Association.
>>
>> It's called "user pays". You know - something that National Party
>> Supporters strongly advocate.
>>
> Paying for standards has nothing to do with government (otherwise I'm
> sure your beloved Labour would have made them free during their 9 years
> in power). Standards are administered by an autonomous entity (Standards
> NZ) which is free from political interference and runs on a commercial
> basis. Its interactions on joint standards with Australia mean there is
> no way to provide free access to the standards without also doing so for
> Australia, something that NZ has no control over.
>


Well today that's simply not 'reasonable'

For a 'reasonable' person to obey the laws of the land they must have
'reasonable' access to the laws they are expected to obey.

In times past when all communication was basically via print media,
buying a copy of the law on paper would not have been 'unreasonable'

Today however with universal access to the Internet there is 'no' reason
why 'all' Acts, Regulations can not be posted on an appropriate website
for 'free and unfettered' access.

e.g. NZ Road Code.
http://www.nzta.govt.nz/resources/roadcode/

If that means Aussy's get to read Standards in 'Common' for free then
I'm afraid that's just 'tough'
(if you read Silicon Chip magazine you will know how ridiculous the
Electrial rules are over there)


Best
Paul.

>
>
> Well today that's simply not 'reasonable'
>
> For a 'reasonable' person to obey the laws of the land they must have
> 'reasonable' access to the laws they are expected to obey.

The standards are not the law


>
> In times past when all communication was basically via print media,
> buying a copy of the law on paper would not have been 'unreasonable'
>
> Today however with universal access to the Internet there is 'no' reason
> why 'all' Acts, Regulations can not be posted on an appropriate website
> for 'free and unfettered' access.
>
> e.g. NZ Road Code.
> http://www.nzta.govt.nz/resources/roadcode/
>
> If that means Aussy's get to read Standards in 'Common' for free then
> I'm afraid that's just 'tough'
> (if you read Silicon Chip magazine you will know how ridiculous the
> Electrial rules are over there)
>

Um... NZ and Aussie use the same standards


>
> Best
> Paul.