Wire gauges?

[jpm83]

What is good gauge for stomp box? I would like to have the answer in square millimeters, because I know that 24 is good gauge but I live in Finland and wire gauges are here in square millimeters.

[Paul Perry (Frostwave)]

Here ya go, wire gauge conversion tables: http://www.rbeelectronics.com/wtable.htm

[Speeddemon]

regular electronics wire in Europe is 0.14mm^2. The equivalent of AWG #24.
I prefer to use 0.25mm^2 (AWG #22). It's a bit thicker, and while it may not have an audible improvement, it's harder to break loose from half-assed solder joints as well or have internal breaks.