Re: electrical deaths

On 2024-12-01 21:05, Edward Rawde wrote:

"Carlos E.R." <robin_listas@es.invalid> wrote in message news:f1ru1lxdqh.ln2@Telcontar.valinor...

On 2024-12-01 18:29, Cursitor Doom wrote:

On Thu, 28 Nov 2024 17:58:18 -0800, john larkin wrote:
>

On Fri, 29 Nov 2024 01:30:40 +0100, "Carlos E.R."
<robin_listas@es.invalid> wrote:

...

Jesus!
>
Yes, I have seen them. On 220 volts. They were used for transformers,
those that had 120 on one side, 220 on the other, both being female
sockets, so you needed a cable with two male plugs to connect them to
the wall.
>
We don't see such transformers anymore, but when I was a kid they were
common, because although most houses were 220 volts, some were 125, so
we had gadgets of both voltages.

>
I've seen them used between two houses, when one had the power shut off.

>
There are thousands of 240VAC to 110VAC transformers in the UK. You can
buy or hire them. They are mandatory for site work. IOW, builders who need
mains power for their drills and saws etc have to use these transformers
for safety reasons.

>
Huh? Why would they want to use their power tools at half the voltage and at least half the power? Running a 240 volt drill at
110?

 No, the power tools will be designed for 115V
Building sites require nothing above 60V (the exact number may be 55, not sure) between you and ground.
So 240V to 120V isolation transformer with secondary centre tapped to ground.
Public display christmas tree lights may require the same. Nothing above 60V so you can't get your hand on the open circuit end end
of a string which has 240V on the other end.

Ah, it is a building code somewhere. USA? Ah, no, you said UK. Well, that is a surprise to me. I had no idea.
But they are using the two semiphases, so 120 volts tools?
Interesting idea. Wise. Unless some idiot forgets to install the ground connection because he is on a hurry.
No, here (Spain) we use full voltage (230) at building sites. Some machines, like the crane, may have the three phases, ie, 300 volts between phases. Of course, I suppose many workers are using battery powered tools.
--
Cheers, Carlos.