On Sunday, 27 January 2019 20:00:18 UTC, Archibald Tarquin Blenkinsopp wrote:
On Mon, 28 Jan 2019 06:43:14 +1100, "Steven" wrote:

But it isn't actually viable to completely redo all the terminals in the
entire house now. Given that the wiring standards are fail safe by
design, it make more sense to fix any others that do fail when they do.

You steamin' great pillock! Fail safe by design?? No such bloody
thing unless you are working to ATEX standards.

Have you seen a glass rod conduct electricity to the point where it
melts and arcs.

it's how Nernst lamps work, though most are ceramic rather than glass

Have you examined insulation that has been drenched and suddenly
become conductive.

paper based insulation being especially vulnerable to this

Wothout an earth path the MCB has no clue whether the couple of kW is
a genuine heating element or a L-N leakage path.

with an earth it's similarly clueless

Likewise although a switch alone is perfectly capable of providing an
audio visual indication of a gas build up,

??

a loose connection will
give the indication a lot earlier and with a higher level of success.

???


NT