On Sat, 10 Nov 2018 21:13:55 -0000, Rod Speed wrote:
"Steven Watkins" wrote in message
news
On Sat, 10 Nov 2018 20:35:25 -0000, Rod Speed
wrote:
wrote in message
...
On Saturday, November 10, 2018 at 10:33:19 AM UTC-5, Steven Watkins
wrote:
Why do houses have a switch to turn the shower off, either a cord on
the
ceiling or a switch in the hall?
Can you please describe the situation more fully. Does this switch turn
off
the water, or does it turn off electricity (such as for a light in the
shower compartment)?
It turns off the electrical heating of the water in the shower.
Some not in england go even further
https://www.youtube.com/watch?v=cNjA0aee07k
I can't understand how that can work with no earth.
Basically there is far less water between the active
and neutral than between the active and any earth
that the person in the shower can be in contact
with even with metal water supply pipes and taps.
Irrelevant. Think of it as two resistors in series (the element and the person). You have live at one end of the element, 240V. This is free to conduct through a few inches of water to the shower head holes, then through the person underneath. Having the element conduct electricity from that 240V point to neutral doesn't change the voltage by much at the 240V end, so the same current will flow through the person underneath.
Is the water coming out of the shower when unearthed not at about 120
volts
Nope, most of europe and china are 240V
I was assuming the middle of the element was close to the outlet.
(the average of the heating element voltage)?
There is no heating element. The
current flows thru the water itself.
Your video showed a coiled wire, this is the element.
That would give you more than a tingle.
In fact it doesn't.
But there is a reason that wimps call them suicide showers.
It wouldn't bother me using one. I'm just wondering why you don't get a full electric shock instead of the tingle in the head that people claim to have had from unearthed ones. If you were stood in your shower, and someone introduced a live conductor in the water stream above you, you'd get a ****ing big jolt surely?