Andrew Gabriel wrote:

In article ,
Vir Campestris writes:
On 02/12/2017 20:32, Andrew Gabriel wrote:
They aren't rewirable - the wire is part of the lampholder.
The wire is specially high temperature, and sometimes steal
rather than copper to cope with running continuously at high
temperature, and with very high temperature insulation.

What kind of lamp runs at nigh on 1000C to make copper care?

Copper can run up to 150C and form only protective Cu2O oxide layer
in air. At 200C and up, different copper oxides are formed which
slowly flake off, so they are not protective, but deteriorating.

Given that the wire from each terminal of the lampholder is steel rather
than copper, does it matter how this is connected to the copper wire
further along? Is there a preferred way to do it?

Daniele