Externally, the jollity of aged men has much in common with the mirth of children; the intellect, any more than a deep sense of humour, has little to do with the matter; it is, with both, a gleam that plays upon the surface, and imparts a sunny and cheery aspect alike to the green branch and grey, mouldering trunk.
1) Knob and tube wiring is two-stranded â with a hot wire and a neutral wire only â it uses no ground wire. There is absolutely no protection whatsoever when a fault occurs.
The hot and neutral wires in a knob and tube setup are run and sheathed separately and placed approximately one inch apart, rather than being bundled together as with new wiring. Most knob and tube installations are restricted to a 60-amp service.