ECN Forum Forums Code Related Discussion Canadian Electrical Code Topics old knob and toob wire

For circuits originally supplied with a bonding wire IE nmd3 or MD about 450 mm of 90 loomex will look after the heat issue but the bonding cannot be done from a K&T circuit.
I don't mean 18 inches of wire in the box either. You need to add a jb. If you have attic space it is easy to relocate the old Jb in the rafter and put a new one with the higher temp wire in the place of the ceiling outlet.