What are the safe and compliant options for terminating an unused knob and tube branch? In this instance, insulation will be applied, so the fixtures and receptacles previously on this circuit have been wired to a completely separate circuit of Romex. This is on a third floor, far away from the panel.
I had an electrician complete this work, but I’m not very confident in the mess of wires he left in the attic. What type of termination should I be looking for in order to feel comfortable proceeding with insulation?
Wires in cavity between roof and 3rd floor ceiling: A wire nut can be seen in the open air