Different sized wires in the same wire holes

[ToolbeltDandy]

When I try to secure a 1 mm wire and a 2.5 mm wire in the same hole (i.e. under the same screw in a switch), the 2.5 mm wire gets clamped while the 1 mm wire comes loose. What ways do people deal with that? Must they both be twisted together?

Also, what's the proper name for a "wire hole" in a junction box or switch or whatever else?

 

[PrenticeBoyofDerry]

Why are you using two differing core sizes in the same terminal?
This is not a practise best used, you should ideally use the same core sizes.

 

[OwainDIYer]

what standard circuit arrangement would have a 2.5mm and a 1mm in the same terminal anyway?

 

[PrenticeBoyofDerry]

Must they both be twisted together?

No avoid doing that, again not good practise.

Also, what's the proper name for a "wire hole" in a junction box or switch or whatever else?

Just in case you missed this in previous posts above, it is known as a terminal.

 

[ToolbeltDandy]

Well they're both wires going into the load terminals on a switch (the feed is 2.5 mm). The switch was originally wired by an electrician to have 2.5 mm feed and 1 mm load. I'm now adding another load but using 2.5 mm cable.

 

[sparkwright]

When I try to secure a 1 mm wire and a 2.5 mm wire in the same hole (i.e. under the same screw in a switch), the 2.5 mm wire gets clamped while the 1 mm wire comes loose. What ways do people deal with that? Must they both be twisted together?

Also, what's the proper name for a "wire hole" in a junction box or switch or whatever else?

You double over the end of the 1 mm wire, but not the 2.5 mm wire.

A 'wire hole' is more commonly known as a terminal.

 

[PrenticeBoyofDerry]

Well they're both wires going into the load terminals on a switch (the feed is 2.5 mm). The switch was originally wired by an electrician to have 2.5 mm feed and 1 mm load. I'm now adding another load but using 2.5 mm cable.

Why are you using 2.5mm instead of 1.0mm, though?
and what is this switch isolating, I assume it's a two pole switch?

 

[streetlighter]

Advice i was given when an apprentice was that when offering both stranded and solid conductors into the same terminal. Is to put your strandeds in first and your soldis will **** in !