If your MOT draws 10 A (you need to measure , i do not know)
2 Oz requires a 10mm wide track.
1 Oz requires a 19mm wide track.
2 Oz are likely to be expensive to have made anyway.
PCB i suggest is NOT suitable for this especially if you have to ask.
Use cable.
The spacing between the pins of your connector blocks is also too small to use without coating.
Solder mask leaves the pins bare and arcing or bridging can still occur.
In a cold workshop where these devices are used there could be condensation.