On 2017-08-08 00:21, James Knott wrote:
On 08/07/2017 06:02 PM, John Andersen wrote:
There are a ton of differences in EU and North American power systems as far as physical structure. Its easy to be less familiar than you think you are. This stuff has become more than a little complex with the growth of grids.
Neutral is tied to Ground almost everywhere in the US, if not on your house then on the next nearest pole or power pedestal.
Ummm... Neutral is *ALWAYS* tied to ground at the power entrance. Other services are likewise bonded to the same ground point.
Not in Spain, I'm certain of that. It is connected, I understand, at the step down transformer, which can serve several city blocks. I don't know in UK, which is the point of interest for the OP.
There's no positive or negative with AC power. It's constantly changing polarity. There are 1 or more hot wires and neutral, with ground completely isolated, except where it connects to the neutral at the power entrance. In normal house wiring there are 2 hot wires, 180° apart, with most circuits using only one hot.
That's American usage, but not EU. -- Cheers / Saludos, Carlos E. R. (from 42.2 x86_64 "Malachite" at Telcontar)