On 2019-02-23 17:03, to...@tuxteam.de wrote:
On Sat, Feb 23, 2019 at 11:21:39AM -0500, rhkra...@gmail.com wrote:
[...]
* and somewhat similarly (but in a very different context) in a 3
pin power
plug for an ordinary household outlet (in the US), the ground pin is
longer
than the power pins so that the ground is connected before power is
applied.
In the second case, the first contact is *protective ground*. It's
there
to protect you from a defective device shorting the hot end to its
chassis. The power carrying pins are connected "at the same time" (i.e.
in some random order, and possibly a couple of times, if you chose
your time resolution high enough).
I'm not very good at electricity. As I've had it explained the neutral
is driven into the ground at the generating station.
The Earth/ground circuit is supposed to be driven into the ground at
your house, it's purpose to allow enough electrons to flow to trip the
RCB/fuse in case there is a short in the local device/wiring and also a
break in the neutral transmission line between you and the generating
station.
mick
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Key ID 4BFEBB31
