On 27/04/18 22:51, Max Demian wrote:
On 27/04/2018 21:54, Tim Watts wrote:
On 27/04/18 21:16, ARW wrote:
On 27/04/2018 19:36, Andy Burns wrote:
ARW wrote:

http://wiki.diyfaq.org.uk/images/8/85/How_wrong.jpg

Live wire to neutral terminal and vice-versa (not that a bulb cares)

It's an ES fitting!

It is? Oh - OK, then yes - I retract the bit about L+N not mattering
too much.

Why does it matter?


Have you ever looked at an ES bulb and its holder. If not, if you have
one, please take a look.

On older fittings, the outer contact is the metal screw thread. If
that's live, then the base of the bulb becomes live as soon as you start
to screw it in. At this point, you could be holding the metal base.

Some modern ES holders have insulating screw threads and a leaf contact
that doesn't mate until the bulb is pretty much home, at which point
it's hard to touch the bulb's metal base.