Re: Electric Shock ?

On Tue, 14 Feb 2006 08:40:15 GMT, "Mr Fixit" <mr_fixit@xxxxxxxxxxxx>
wrote:


<default> wrote in message
news:op92v1lnabiccsu3ab0qn463pkembem8lq@xxxxxxxxxx
On 13 Feb 2006 12:31:54 -0800, mowhoong@xxxxxxxxxxx wrote:

I comfirm that is a two pin power core.

Describe the plug end and machine end. Are the pins in the plug

in the UK we have two pin figure of 8 connectors like this
http://www.itx-warehouse.co.uk/Product.aspx?ProductID=475
its a two core cable no earth and not keyed so you can plug it in both ways
and quite happily plug live to neutral and visa versa


From your link:

"Description Generic Main lead - UK to Figure 8
Mains lead with UK style 3 pin plug, terminated with Figure 8 style
moulded connector."

Says three pin plug.

We (US) had some plugs shipped over here that were supposed to be for
the UK at a place I worked. They were large round molded bodies with
two smooth polished round pins and the pins had insulating sleeves
near the plug body. They had three wires blue, brown, green/yellow
and an IEC connector at one end.

There was a third flat metal piece on the plug that had a round hole
that went through the plug body. It was connected to ground and its
purpose seemed to be to add a pin or perhaps a screw to keep the plug
in place? Just speculating . . .

I was on line looking for UK electrical requirements. They seem to be
the same as here in the states. Three wires with a hot neutral and
ground . . . only difference I saw was in the wiring of electrical
light switches they don't show the ground going to the switch -
perhaps that was an oversimplification.

We have some two wire appliances with GFI protection built into the
plugs and "wall wart" switching supplies with only two wires.
Computers are three wire. The area I live at has adapted an
electrical code that requires four wires on 240 volt electric stoves.

There's still a lot of two wire appliances - many of those have
all-plastic bodies. Houses and new construction here require GFI
protection on outlets outside the house, in most garages, all
bathrooms and kitchens, on hot tubs etc..

Workplace safety hasn't caught up - I tried to promote GFI's in a
laboratory where I worked - we had large volumes of water (and
electrolytes) and lots of electrical equipment. It wasn't required,
so they wouldn't do it, but they put one on my workbench because I
worked on the equipment - and I didn't ask for it, had no water
nearby, etc..

I inadvertently got connected to a leaky coffee maker - the GFI
tripped and I could feel the current. Just now put a 12K resistor
across the hot to ground and tripped the GFI - instantly.

UL rules here: GFI required to trip at
6 milliamps within 5.6 seconds
50 ma in 270 milliseconds
100 ma in 100 milliseconds
250 ma in 27 milliseconds

In practice, 6 milliamps will cause a trip in 50 milliseconds or less.
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