12-21-2014, 02:19 AM
I would use 20 gauge, 600 V rated, either as tinned stranded wire or solid core wire depending on what the set used originally, but use 18 on power transformers. The insulation on a lot of 22 gauge wire is very thin, so you really need to watch the voltage rating on that stuff.
Regards
Arran
Regards
Arran