🚀 go-pugleaf

"Sylvia Else" <sylvia@not.at.this.address> wrote in message 
news:00ba671c$0$7777$c3e8da3@news.astraweb.com...
> Rich Grise wrote:
>> On Mon, 09 Mar 2009 01:20:22 +1100, Sylvia Else wrote:
>>
>>> I've recently bought a D-Link DIR-300 wireless router. While 
>>> disconnecting its power supply from it, I got a tingling sensation when 
>>> I touched the plug (to be clear, I'm talking about the 5V DC plug, not 
>>> the mains plug).
>>>
>>> An AVO meter shows about 90V AC to earth from either side of the 5V 
>>> plug. Short circuit current to earth is about 0.1mA.
>>>
>>> Still, I thought these things were meant to be completely isolated. Has 
>>> there been a change of approach?
>>>
>>
>> If the wart is 2-prong, turn it around in the socket. If it's 3-prong,
>> get an outlet tester.
>
> I can't really see how that could be relevant. If the device's low voltage 
> side was completely isolated (which I've now learned it isn't), then 
> changing the mains pins around wouldn't make any difference.
>
> Australia's power plugs cannot be reversed, even if they're only two 
> prong. The sockets look like these:
>
> http://en.wikipedia.org/wiki/File:Wall_wart.jpg
>
True, Sylvia, but GPOs (general power outlets) are often wired wrongly, both 
by do it yourself  illegal wirers (encouraged by SC alas) *and* licenced 
electricians (proves one of SC's arguments!)