Build and fully powered the smallest fusion reactor, but still get the notice of "Incomplete Ring". Also tried toroid size 4 setup. Still not working.

The worst of all, it is still taking power and heating up...

MC version: 1.10.2
NC version: 2.3

All config untouched:

I am aware that there are issues with fusion, and I will have to get round to them. However, in your case, I believe that you are using the wrong type of electromagnet - you should be using the standard electromagnets, made with copper. The superconducting version will be used for particle accelerators.

Yes, you are right. I used the wrong one. Must be playing too much gregtech... Closing now.