In article ,
GB wrote:
On 28/05/2015 10:17, Dave Plowman (News) wrote:
In article ,
Mike Tomlinson wrote:
As there is with any metal. But you don't expect the copper pipes in
your central heating to fail, so why expect wiring to do so?

Your pipes aren't held together with screws, which loosen over time.

You've never come across a compression fitting, then?

I could see that one coming. What are the screw joints made out of in
electrical work? Brass? How does the coefficient of expansion compare
with copper?

Compression fittings are brass. Tube copper.

Electrical fixing screws (and the terminal it screws into) are generally
brass. Cable copper.

Have you never done any DIY that you have to ask such a question?

--
*"I am " is reportedly the shortest sentence in the English language. *

Dave Plowman London SW
To e-mail, change noise into sound.