Ultimate guidance to avoid Electromagnetic Interference

Thank You for Your help mr.Rod.

Just found this pic. Notice the grounding point. There must be a reason for it...

 

For sure, thanks!

Job finished today to have a functional plasma table.
1.changed the RCCB from 40A to 63A , for the shop only. (separate from my living place)
2.changed the power supply cable for my shop from 5g2.5 copper to 4x25 Alu.
3.New plasma source designed for CNC use arrived at my family living in Belgium, should be here in 5 days, stamos 85A.
4.buried a copper rod deeper in ground .
5.ordered shielded cable for stepper motors 4g1.

Will try to update you as soon as i can if these changes will make any impact in accuracy of cutting.
Kind regards 
Shpat


 

Tomorrow is action day , i'll post pics of the cuts .
Job done today :
1.finished the whole power supply of the shop.
2.Added 2x   3poles circuit breaker  of 32A one for the plasma source only.
3.Doubled the ampacity of sockets from 16A to 32A.
4.Upgraded the cables on shop from 5g1.5 to 5g2.5 .
 

did some cuts yesterday and today . The new cable fixed the accuracy up to 30%, but still is not fully functional.
Stahlwerk plasma did the last cuts on my workshop today, as i sold here to a guy that builds truck trailers.
Next week i'll dismantle the whole machine and send it to Tommy's workshop to change the electronics,cables and Z axis.
I'll try to keep You updated as we get rid of these problems of accuracy i had for 1 year , it started to get mental issue  literally slowly destroying my brain cells.
kind regards 
Shpat